USSRYes, goblin traps. All spells, which caused the crash before (Crystal, wall of swords and hive). Without the patch, crashes occur 100% of the time. With this DLL, crashes occur with some probability, but they still occur.Create an arena with goblins and throw traps, and cast a summon on the trap with the enemy hero. Sooner or later, the crash happens.

USSRDoes the AI ​​fix require a separate mod installation or is it built into the library? I understand it works right away without the mod. Right?

The AI fix is included in the DLL there is nothing for you to do.

dredknight⚠️⚠️⚠️ Due to the recent update of the game by Ubisoft on steam, this patch is no longer compatible with the steam version of the game. This is because of exe change. 
To use the patch you should either use difference game source or install older version of the game before the change (if that is possible).