AI locks up when controlling a player

[PurpleCrowbar]

When an AI would take control of a player, for example due to the effect of [[Emrakul, the Promised End]], they take no actions when controlling that player until their timer entirely runs out, regardless of AI skill level. This bug was reported in a comment on #2088, but was not made its own issue for some reason.

[github-actions]

Emrakul, the Promised End - (Gatherer) (Scryfall) (EDHREC)

{13}
Legendary Creature — Eldrazi
13/13
This spell costs {1} less to cast for each card type among cards in your graveyard.
When you cast this spell, you gain control of target opponent during that player's next turn. After that turn, that player takes an extra turn.
Flying, trample, protection from instants

[Susucre]

Of note, it is also broken for human players. Might not be entirely the AI's code fault but there might be some shared issue on how control change is handled by game engine.

#12192

[JayDi85]

AI do not use HumanPlayer code -- it's two different problems.

HumanPlayer has many miss places with wrong player usage, see TODO list with examples:

they take no actions when controlling that player until their timer entirely runs out, regardless of AI skill level

Yes, it looks like a game freeze due priority or active player lost. Can /fix chat command to fix it?

[JayDi85]

Game freezes with AI fixed in #12878, potential AI implementation left in #13220

P.S. Game engine do not support real control changing — that’s all implemented in upper layer (inside human/network and computer implementations).