PI frowns upon such pleb mechanisms like betatesting their games that are about to be published, not to mention patches and extensions, so while most of my visits on other gaming fora are paid mostly to talk about tactics and possible improvement, this place's sole function for me is ranting space. So, without further ado:
1. Even though I have fleet basing rights right next to my damaged fleets (basing deal, vasal/colony nation province), the fleet will travel half way across the world to repair in one of my core provinces.
2. Provinces colonized in the Horn of Africa never start producing any goods and inform me that I need to colonize my fully developed provinces in order to get a manufacturing good.
3. Popups about price change don't include any details if you are not the main affected nation. I guess that you get this status if you are the leading producer. Many popups about price changes don't ever show, even if you own provinces that produce given good and/or you are getting trading bonus from it. Also, most price change modifiers occur randomly or at least fire in random fashion.
4. Full annexation does not allow ceding provinces to allies, resulting in their wrath about not having their cores returned, even though that was the cause of war and they were gifted said provinces the day after the war ended. Full annexation always awards the war leader with all enemy provinces, no matter who controls them.
5. Supported, allied rebels are hostile towards player's allies in a war that was started in order to aid these rebels (that's my favorite example of PI's logic), which effectively crushes the rebel if player calls any strong allies to the war and even though rebel demands can still be enforced, the whole thing is ridiculous.
6. Vasals in colonial areas (vasalized european colonial state that moved its capital to the new land) do not core inland provinces awarded to them in wars.
7. Sometimes insulting a rival yields 5 pp points, sometimes it doesn't.
8. Tiny countries tend to become valid rivals tor 24 hours (game time) and immediately after being selected as rivals they become eclipsed. This can be spammed sometimes.
9. Nations comparable to the player become and cease to be valid rivals for players every other month for no apparent reason.
10. Huge allied stacks will not move against enemy provinces even if ordered to by in-province order or the general "aggressive order" unless an enemy stack shows up and attacks some other friendly stack effectively waking the slumbering friendly stack from its stupor. The friendly stack will ignore attrition and enemy movement while in coma until the condition mentioned above is fulfilled.
11. AI is completely unable to bring home any army stacks that were left in "evacuation mode" on some other continent or even on a larger island, like Great Britain. They will just stand there useless for centuries.
12. If you let your guard down even for a moment, allied AI is more than happy to award you with 200%+ overextension after making peace with several separate war opponents.
13. If you want a long war to end, your own or fought between ai, reload your last save, or in ironman mode, leave to menu and restart the game. The war will end in 2 days.
14. If you want big countries to shuffle their rivals, see point 13.
15. Allied AI will accept in peace deals whatever provinces you offer them. Even those it will never be able to conquer or even reach with its troops. A perfect exploit to undermine your allied rival-to-be.
There were a few more things but I cannot recall them now.
1. Even though I have fleet basing rights right next to my damaged fleets (basing deal, vasal/colony nation province), the fleet will travel half way across the world to repair in one of my core provinces.
2. Provinces colonized in the Horn of Africa never start producing any goods and inform me that I need to colonize my fully developed provinces in order to get a manufacturing good.
3. Popups about price change don't include any details if you are not the main affected nation. I guess that you get this status if you are the leading producer. Many popups about price changes don't ever show, even if you own provinces that produce given good and/or you are getting trading bonus from it. Also, most price change modifiers occur randomly or at least fire in random fashion.
4. Full annexation does not allow ceding provinces to allies, resulting in their wrath about not having their cores returned, even though that was the cause of war and they were gifted said provinces the day after the war ended. Full annexation always awards the war leader with all enemy provinces, no matter who controls them.
5. Supported, allied rebels are hostile towards player's allies in a war that was started in order to aid these rebels (that's my favorite example of PI's logic), which effectively crushes the rebel if player calls any strong allies to the war and even though rebel demands can still be enforced, the whole thing is ridiculous.
6. Vasals in colonial areas (vasalized european colonial state that moved its capital to the new land) do not core inland provinces awarded to them in wars.
7. Sometimes insulting a rival yields 5 pp points, sometimes it doesn't.
8. Tiny countries tend to become valid rivals tor 24 hours (game time) and immediately after being selected as rivals they become eclipsed. This can be spammed sometimes.
9. Nations comparable to the player become and cease to be valid rivals for players every other month for no apparent reason.
10. Huge allied stacks will not move against enemy provinces even if ordered to by in-province order or the general "aggressive order" unless an enemy stack shows up and attacks some other friendly stack effectively waking the slumbering friendly stack from its stupor. The friendly stack will ignore attrition and enemy movement while in coma until the condition mentioned above is fulfilled.
11. AI is completely unable to bring home any army stacks that were left in "evacuation mode" on some other continent or even on a larger island, like Great Britain. They will just stand there useless for centuries.
12. If you let your guard down even for a moment, allied AI is more than happy to award you with 200%+ overextension after making peace with several separate war opponents.
13. If you want a long war to end, your own or fought between ai, reload your last save, or in ironman mode, leave to menu and restart the game. The war will end in 2 days.
14. If you want big countries to shuffle their rivals, see point 13.
15. Allied AI will accept in peace deals whatever provinces you offer them. Even those it will never be able to conquer or even reach with its troops. A perfect exploit to undermine your allied rival-to-be.
There were a few more things but I cannot recall them now.