To prevent from duplicates and to always have an up to date overview of currently unresolved (rules-related) bugs/issues of wwII-games, I have collected the respective engine-related Github-issues to list them here.
I am focussing on Github here, as all related content has been approved, so that the issues qualify.

So this topic serves as sort of inventory for everybody who is interested in the current status.

Note: In case an issue is marked as “closed” (on Github) this does not imply that it has been resolved.

I can’t guarantee that this list is complete, due to the masses of opened and closed issues, but I will try to keep it updated. This list does not contain bugs that have not been documented by a Github issue yet.

Also this list will be checked against the latest pre-releases. So issues not appearing here might be fixed for pre-releases but not for the latest stable.

If you discover new issues please report them on Github:
https://github.com/triplea-game/triplea/issues

This list has been originally posted on
https://www.axisandallies.org/forums/topic/32958/triplea-engine-known-rules-related-bugs-issues

Rules Issues on GitHub (this list does not include issues filed at the map repos):

1. Unresolved issues

Sub combat rules wrong:
(example see https://www.axisandallies.org/forums/post/1249085)
https://github.com/triplea-game/triplea/issues/1645

v5-1942 air battles not supported:
https://github.com/triplea-game/triplea/issues/1867

Should Be Able To Retreat To SZ With Only Enemy Subs (>=V3):
https://github.com/triplea-game/triplea/issues/3428

Display Overbuy Rule to Game Players:
https://github.com/triplea-game/triplea/issues/3767

Incorrect handling of AA-fire and/or AA-fire casualty selection:
https://github.com/triplea-game/triplea/issues/4133

Kamikazes don't kill marines on board:
https://github.com/triplea-game/triplea/issues/4634

Can blitz through a friendly neutral. Should not be possible:
https://github.com/triplea-game/triplea/issues/4685

Rule problem: should not offer option to retreat:
https://github.com/triplea-game/triplea/issues/4688

Allied Air Units Cannot Be Taken as Casualties Offensively (v1):
https://github.com/triplea-game/triplea/issues/4794

Submarine submerge and retreat issues:
https://github.com/triplea-game/triplea/issues/4821

V4 [and others] Should [not] give refund for an overbuy:
https://github.com/triplea-game/triplea/issues/5194

Anniversary AAA/Paratrooper issue:
https://github.com/triplea-game/triplea/issues/5834

Battle calculator in Global 1940 incorrectly distinguishes UK-pacific from British units:
https://github.com/triplea-game/triplea/issues/5844

Non Combat Move Unloading From Transports Unloaded During Combat Move (v2):
https://github.com/triplea-game/triplea/issues/6039

Placement on friendly carrier is incorrectly allowed:
https://github.com/triplea-game/triplea/issues/6238

Aircraft casualties should take those with least move pts:
https://github.com/triplea-game/triplea/issues/6256

TripleA allows NCM-landing in territories that have not been friendly at the start of the turn:
https://github.com/triplea-game/triplea/issues/7350

2. Partly resolved issues

Rocket attacks and Scrambling resolved during wrong phases:
https://github.com/triplea-game/triplea/issues/3846
(solved for G40; there are remaining aspects (e.g. v1))

TripleA illegally allows placement of newly built air units on friendly carriers:
https://github.com/triplea-game/triplea/issues/4480

3. Resolved issues

Incorrect transports already unloaded error message:
https://github.com/triplea-game/triplea/issues/874

Incorrect handling of Transport's "stalemate":
https://github.com/triplea-game/triplea/issues/2367

Transport loading bug (rules):
https://github.com/triplea-game/triplea/issues/3162

Can't remove transported units without removing transport:
https://github.com/triplea-game/triplea/issues/4446

panther2 created this issue in triplea-game/triplea

open Incorrect handling of AA-fire and/or AA-fire casualty selection #4133

panther2 created this issue in triplea-game/triplea

open Rule problem: should not offer option to retreat #4688

@Gargantua
Please browse to

c:\program files\common files\i4j_jres\

and delete the folder "i4j_jres" and its subfolders manually.
It is the here included old Java 1.8.0_66 that causes your trouble.

Then try to use the dice server again.
If it still doesn't work please reinstall Java 8 update 211 using the Windows Control Panel.

@beelee It is in the menu item "Export" ... "Export game.xml File (beta)".

@LaFayette Though I am constantly testing pre-releases, I have not updated the spreadsheet for some weeks now. The reason for this is the sometimes high frequency of updating pre-releases per day. I see me updating my pre-release version sometimes maybe three times a day to continue using the latest version and testing the latest pre-release.

Sometimes the changes that lead to a new pre-release are not comprehensible to non-developers.
Does that change affect gameplay? Is it "just" something in the background? Do I have to restart testing because PR xyz has been merged? Can I just move on just using the new pre-release?

That is why I hestitate to permanently update the version that I am testing in the spreadsheet.

@beelee Latest version is Java 8 Update 201.
It does not affect TripleA in any way.

What "messes TripleA up" are those old "bundled versions" which included outdated Java versions, that were never updated, see
https://github.com/triplea-game/triplea/issues/4358

From a security perspective it is always a good idea to go with the latest Java Update available.

simon33-2 created this issue in triplea-game/triplea

closed Too many problems from old Java versions #4358

Maybe this helps:
In all related cases we had on axisandallies.org this error has been caused by an outdated Java present in

c:\program files\common files\i4j_jres\

TripleA always seems to "prefer" to use the old i4j-Java (that once had been bundled with TripleA-installation files) instead of using the installed latest JRE. The solution in these cases is to manually delete the above mentioned i4j_jres folder with its subfolder(s).

I see from the above postings that "common files" have been inspected before, but maybe not "i4j_jres" (?).

@ff03k64

@Cernel said in map making questions:

@ff03k64 The mapmaking tutorials used to be here:
https://github.com/triplea-game/triplea/tree/master/docs/map_making

Now I cannot find them anymore...

@redrum etc. Am I missing them or have they been moved. Where are they now?

Now the documents are part of the "Wiki":
https://github.com/triplea-game/triplea/wiki

@Cernel Alternatively we could reduce the minimum character requirement for usernames to "3" for our forum.
This is an administrative setting. It is "4" at the moment.

However I agree consistency over different platforms would be desireable.

@JPW062 I am not sure if I understand you correctly, but apps such as TeamViewer or other Remote Desktop clients allow similar actions. So you can for example use TripleA with your smartphone by accessing your desktop computer at home.

@Alexei-Svitkine That's a good idea, indeed, as in the original A&A boardgames purchased units are placed in the "mobilization zone" and thus are visible there until placement.

@Trevan said in Idea: Change LL - Neutralized Subs Roll With Main Combat Roll:

If a map has the "WW2V2" property, then the subs must fire at a separate time from the rest of the units. The presence of a destroyer doesn't affect it.

Just for completeness:
Also in v1 where Destroyers are not even part of the game. There is nothing that prevents an attacking submarine from executing its First Strike Shot.

@ff03k64 said in Idea: Change LL - Neutralized Subs Roll With Main Combat Roll:

@LaFayette said in Idea: Change LL - Neutralized Subs Roll With Main Combat Roll:

@Panther said in Idea: Change LL - Neutralized Subs Roll With Main Combat Roll:

If a lonely submarine fights against a destroyer and a carrier and scores a hit during the opening fire step it does matter which casualty is chosen at that time

Does it? There are three combat phases here, first strike, offense, defense. It does not matter whether the sub rolls during first strike here or offense.

While not what i was thinking, this is a good example. I could choose the destroyer first, and hope that either the sub or destroyer get a hit, and then i save my expensive unit, or i could keep the destroyer in fear that i an not going to get a hit this round to make sure the sub doesn't get a first strike next round.

Thank you, @ff03k64 .

@LaFayette This example illustrates why the time when casualty selection has to take place is an important aspect of the rules.

@LaFayette said in Idea: Change LL - Neutralized Subs Roll With Main Combat Roll:

The fact that the first strike units roll first always is more for simplicity and consistency.

Maybe in some TripleA implementations, but not by the rules.

@Panther I was referring to the rules on that account, if subs are incorrectly rolling during first strike then it is all the more to the point.

In the discussed context/example the rules enforce a decision about casualty selection under uncertainty. I don't know on what you base your "... is more for simplicity and consistency"-statement.

It is only TripleA on some maps/rulesets that enforces submarines to fire during an opening fire step that does not exist in those rulesets, so maybe this implementation is "for simplicity and consistency". There the result is vice versa. In those rulesets, even when a destroyer cancels a submarine's Surprise Strike ability, TripleA irregularly lets the submarines fire first and irregularly enforces a casualty selection, despite the fact, that this selection would be needed only later - when the other dice results are visible.

We are discussing nothing new here. All of this has been part of Github issues and forum discussions in the past. I have not checked this lately so maybe some aspects have been resolved in the meantime...

@LaFayette said in Idea: Change LL - Neutralized Subs Roll With Main Combat Roll:

If all casualties get to fire back, that will never change the order of losses that someone selects. It does not matter if the subs were the ones that rolled a hit or if it's destroyers.

You are wrong when assuming that all casualties get to fire back and generalizing the topic to this situation. During the opening fire step you usually don't know how many units involved in the battle will score how many hits. If a lonely submarine fights against a destroyer and a carrier and scores a hit during the opening fire step it does matter which casualty is chosen at that time. If both opposing units don't score the selection how to assign the submarine's hit might be totally different later - when already knowing the result of both rolls.

The fact that the first strike units roll first always is more for simplicity and consistency.

Maybe in some TripleA implementations, but not by the rules.

Anyway, Trevan and me have already sorted it out:
There is no dissent when talking about rulesets where TripleA incorrectly rolls for a submarine at the wrong time (creating an Opening Fire Step that by the rules does not exist).

@Trevan Yes, sorry about that. I am not a native speaker, so I use edits often to "optimize" my wording and to correct typos.

@Trevan said in Idea: Change LL - Neutralized Subs Roll With Main Combat Roll:

In those versions, if a destroyer is present, then the subs fire at the same time as the other units. But the engine currently keeps the subs separately from the other units even though it doesn't need to.

That indeed would be incorrect by the rules in some rulesets - and addressed in some Github issues AFAIK.

@Trevan That is why I asked which ruleset he has in mind. As rules are different here.

So let's talk about which rulesets are addressed, then I will be happy to reconsider .

@LaFayette

It looks like. On my system the installer wants to install into "C:\Program Files\TripleA".
I am using "C:\Games\TripleA" instead.

C:\Program Files\ is a somehow restricted system directory.

@LaFayette said in Idea: Change LL - Neutralized Subs Roll With Main Combat Roll:

To clarify, a neutralized first strike is one where the presence of destroyers allows any first strike casualty to fire back. I'm wondering if you are making a distinction between having 'first strike' and the impact of first strike on casualties.

Well, it is not necessarily me doing this, but rather the rules instead.

There indeed is a distinction between "first strike" and the impact of first strike on casualties.
As I said in v2 the enemy Destroyer does not affect the Submarine at all. It just enables the casualty of its own side to fire back during the regular step.

Despite the presence of an enemy destroyer the submaine still fires during the Opening Fire Step. And their casualties have to be chosen immediately at that time.
It is just that those casualties are not immediately removed but fire back.

Now if you ignore this opening fire step as you suggested the submarine casualty selection will be different.

The rules say: In any case select sub's casualties not knowing the results of the later shots of other units.
Your proposal implies: Select sub's casualties under full transparence of information of other rolls.

I don't care about LL - as LL is house rule anyway. But I would not like to see this change in regular dice games.

@LaFayette
Sorry for the confusion. I am used to the fact that the enginge creates log-files in the installation directory. I was referring to the error.log file.

These are the first lines of the triplea.log-file:

297  15:09:59.314 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Classic @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_classic-master.zip!/world_war_ii_classic-master/map/games/classic.xml
299  15:09:59.316 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Global 1942 2nd Edition @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_global-master.zip!/world_war_ii_global-master/map/games/ww2global42_2nd_edition.xml
299  15:09:59.316 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Pacific 1940 2nd Edition @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_pacific-master.zip!/world_war_ii_pacific-master/map/games/ww2pac40_2nd_edition.xml
299  15:09:59.316 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II v5 1942 Second Edition @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_v5_1942-master.zip!/world_war_ii_v5_1942-master/map/games/WW2v5_1942_2nd.xml
299  15:09:59.316 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: 0 @ jar:file:/C:/Users/dh/triplea/downloadedMaps/0.zip!/games/0.xml
299  15:09:59.316 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Revised @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_revised-master.zip!/world_war_ii_revised-master/map/games/ww2v2.xml
299  15:09:59.316 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Global 1940 2nd Edition with Combat Move First @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_global-master.zip!/world_war_ii_global-master/map/games/ww2global40_2ndEd_move1st.xml
299  15:09:59.316 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II v3 1941 @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_v3-master.zip!/world_war_ii_v3-master/map/games/WW2v3-1941.xml
299  15:09:59.316 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: WW2v4 Six Army Free For All v2 @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_v4-master.zip!/world_war_ii_v4-master/map/games/WW2v4_Six_Army_Free_For_All_v2.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: WW2 Path to Victory @ jar:file:/C:/Users/dh/triplea/downloadedMaps/ww2_path_to_victory-master.zip!/ww2_path_to_victory-master/map/games/ww2_path_to_victory.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Europe 1940 Original @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_europe-master.zip!/world_war_ii_europe-master/map/games/ww2eur40.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Global 1940 Canadian Mod with Combat Move First @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_global-master.zip!/world_war_ii_global-master/map/games/G40CanadianMod.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: WWII Europe 1940 Original SeaLion-Balanced @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_europe-master.zip!/world_war_ii_europe-master/map/games/ww2eur40_veqryn_balanced.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Classic 3rd Edition @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_classic-master.zip!/world_war_ii_classic-master/map/games/classic_3rd_edition.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: Classic: Iron Blitz 3rd Edition @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_classic-master.zip!/world_war_ii_classic-master/map/games/iron_blitz.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Global 1940 Balanced Mod3 with Combat Move First @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_global-master.zip!/world_war_ii_global-master/map/games/ww2global40_balanced_move1st.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Global 1940 2nd Edition @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_global-master.zip!/world_war_ii_global-master/map/games/ww2global40_2nd_edition.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II v3 1942 @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_v3-master.zip!/world_war_ii_v3-master/map/games/WW2v3-1942.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II v4 @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_v4-master.zip!/world_war_ii_v4-master/map/games/WW2v4.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II v6 1941 @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_v6_1941-master.zip!/world_war_ii_v6_1941-master/map/games/WW2v6_1941.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: WWII Pacific 1940 Original J1-Balanced @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_pacific-master.zip!/world_war_ii_pacific-master/map/games/ww2pac40_balanced_veqryn.xml
300  15:09:59.317 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Revised LHTR @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_revised-master.zip!/world_war_ii_revised-master/map/games/lhtr.xml
301  15:09:59.318 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II v5 1942 SE TR @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_v5_1942-master.zip!/world_war_ii_v5_1942-master/map/games/WW2v5_1942_2nd_TR.xml
301  15:09:59.318 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Pacific 1940 Original @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_pacific-master.zip!/world_war_ii_pacific-master/map/games/ww2pac40.xml
301  15:09:59.318 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: Ozteas 1941 Global Setup @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_global-master.zip!/world_war_ii_global-master/map/games/Ozteas_1941_Global_Setup.xml
301  15:09:59.318 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Global 1940 Original @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_global-master.zip!/world_war_ii_global-master/map/games/ww2global40.xml
301  15:09:59.318 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Europe 1940 2nd Edition @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_europe-master.zip!/world_war_ii_europe-master/map/games/ww2eur40_2nd_edition.xml
301  15:09:59.318 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: World War II Global 1940 Balanced Mod3 @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_global-master.zip!/world_war_ii_global-master/map/games/ww2global40_balanced.xml
301  15:09:59.318 [Thread-2] DEBUG g.s.e.f.m.f.s.l.AvailableGamesFileSystemReader - Found game: WW2v4 Six Army Free For All @ jar:file:/C:/Users/dh/triplea/downloadedMaps/world_war_ii_v4-master.zip!/world_war_ii_v4-master/map/games/WW2v4_Six_Army_Free_For_All.xml

@LaFayette On my Windows10 the triplea.log file is - as usual - in the TripleA installation folder (22477). I use custom installation folders however.