I've played through most of the game in TBM and minor threat didn't proc a single time initially i thought it was just bad luck but then i tested weapons with the coordinating effect and they are not giving the accuracy bonus as well so i think both are bugged since they work similarly.
Adragans take multiple turns in a roll, this one is very consistent they just cast a bunch of spells instantly.
Frost trolls get a free turn when they died and ressurect, not sure this one is a bug i kinda like tbh adds some spice to them that said i also had multiple trolls(normal and frost) getting 2-3 turns in a roll against me while attacking similar to the adragans but rarer.
Enemies lose their stun/paralysis when hit by amplified wave, this one is not super consistent but sometimes they just snap out of the sunned/paralyzed animation and sure enough when their turns come they get to act even with these debuffs on.
Sometimes when my barbarian takes multiple turns in a roll with that passive that negates recovery on kills the game doesn't end the turn properly and gets stuck forcing a reload.
It would be great if the log had a tab for all the initiative calculations a lot of enemies cast spells very quickly(as in they only go down 2-3 spot in the queue) and it's difficult to say if they are bugged or not.
It would also be nice to show the actual numbers instead of that low/average/high initiative in the UI.