I think I originally posted this in the wrong forum. Please feel free to delete the duplicate.
I’ve noticed that after 1-button assist was implemented that the Augmentation Evoker sometimes get stuck in a strange state where all her spells are greyed out but actually usable. The semi-unplayable part comes in when the 1-button rotation gets stuck on Living Flame and never casts anything else.
I haven’t noticed this happening with Devastation.
I haven’t found a reliable pattern to reproduce this but it feels like it happens after I pop my big cooldowns: Tip the Scales + Blastmaster 3000 (trinket) + Fury of the Aspects.
The fix is to completely log out and back in; which is both annoying and not really feasible in group content.
Update: It happened to my Devastation Evoker on Undermine today. I think it is happening when my target dies while my empowered spell is revving up. It leaves me in a permanent “in combat” state afterwards. That is why everything is greyed out and 1-button is stuck on Living Flame.