ToME: the Tales of Maj'Eyal

At any time a rare enemy would priorize Thorn Grab over another attack while the target is out of range, it spends a turn on using Thorn Grab, while the game only says "ENEMY uses Thorn Grab...". The worst part about it is though, that it doesn't put Thorn Grab on cooldown after, thus the enemy will try to use Thorn Grab and fail until a more priorized skill would be available to them
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FYI I just ran into a rare honeytree who spent his whole existence on using Thorn Grab in this context, because it was their most priorized attack! Poor thing Also I played ToME vanilla when I noticed that.

I think the case is closed: This particular honeytree most probably had nothing else to do.
I think so, because Thorn Grab doesn't even take a turn so the honeytree probably just waited. Although I still consider the game saying "ENEMY uses Thorn Grab" unintended, since Thorn Grab doesn't happen and doesn't go on cooldown.

No, forget what I said: The honeytree DID have slime spit and didn't use it, so it's a real thing. They lost turns on using Thorn Grab.