I've had a bug where TIE Dagger get to 15 stacks of Vengeance, but do not dispel debuffs on Sith allies, nor reset vengeance stacks, thus getting stuck with 15 stacks for the remainder of the battle. I think as well that Dagger did not get the bonus turn it should at 15 stacks, but this part I'm not 100% certain about, as I mainly paid attention when I noticed Dagger was at 15 stacks and stuck there, without dispelling debuffs.
The full fleet I've seen this with is Leviathan as cap ship, Fury, bomber and Dagger starting, with scimitar and MK6 reinf + 2 other ships.
I've experienced this bug twice where I've been aware of it, most recently two days ago in fleet arena.
I'm running the game on iOS.
