I already knew about this it seems that they changed the way it works.In poe 1 even if you have show relative defences enabled you get question marks when 1 time encountering creature.
which bug?
No offence but its mindbogling that people didnt notice something that appears when you mouse hover on boars at the start of the game.
https://forums.obsidian.net/topic/99448-beastiary-bug/