I'll take a look at these, but AFAIK:
- Iden's Stun Droid isn't a force power, therefore it isn't one of the abilities that should be fully blocked like stated by their Hero Designer when he decided to change the blocking system recently. Before this her stun always broke block, which renders the enemy prone to attacks for almost the same length as stunning them would (which is ridiculous IMO). But as other non force powers have now been changed to be fully blocked, I can see why one would label this as a BUG. I would.
- I can confirm I already got stuck in Heroic Might after they "fixed" it. it definetly improved though. But never in retribution (but I always try to use retribution while I'm safe, so that may explain why I didn't experience this yet). But the stuck dmg reduction only is a BUG I have experienced a lot, either when I play Ani, or when I'm against Ani.
- Only Grievous Unrelenting Advance is now removing all Stamina at once, his attacks aren't. Maybe you got confused, or maybe it was a situational glitch. I have tested grievous in splitscreen recently, and the only thing that he did which removed all stamina instantly was his Unrelenting Advance.
- Yes, Dark Aura still causes that BUG. Yet another day 1 BUG never solved.
- Last time I tested this (and it was really a loooong time ago, probably April 2018) it was applying the extra damage properly. I'll check this out next time I do my round of tests.