Viper Napuatzi Pushed Out of Arena & Forced Out of Demon Form

Couldn't find an in-game bug report so I believe this is where? When using Frost Wall I accidentally pushed the boss out of the arena, and she would not reenter. She was stuck behind her minions. She stopped attacking and could not be damaged. Couldn't complete the map. Another issue, which is not really a bug but a design choice, is that when entering the fight, she forces you out of demon form and into a slow walk. In the campaign it's understandable as there is dialogue with Alva, but in maps its unnecessary and annoying as I then have to wait for demon form to cooldown and also rebuild stacks.