*Spoilers*
I am in the battle with the Hook Horrors. I have Glut with me. Everything's going as expected until I make Glut revive one of the fallen Hook Horrors on Glut's turn. The newly risen Hook Horror rolls for initiative to join the battle, but then for some reason it's no longer Glut's turn. It's no longer anyone's turn and I can't leave turn based mode since I'm in combat. I can't end Glut's turn or anyone else's turn. I just ended up having to reload from a previous save before the battle.
Did this happen to anyone else?
Yes, especially with Glut this is a known bug. I have had it happen if I have an existing Myconid zombie and I use gluts turn to revive a different one (killings the first one) - for some reason the game has trouble resolving this and you end up stuck in an infinite turn and have to reload/force quit.
For now stick to doing his Zombie thing outside of combat.