Boss not targetable midfight, can't reset/respawn

https://www.youtube.com/watch?v=BaHhcTt0BLo

I encountered this bug mid-fight with the Blooming Field boss. It suddenly wasn't targetable anymore and I couldn't do any damage. Relogging set me in the very same position. I tried AOE attacks but it wouldn't help. The boss could damage me though.

I couldn't portal out of the fight either, only leaving me to intentionally let my character die in order to be able to progress. Since I had to die in the boss fight, it also removed all other content and mobs I had left in the map, additionally to the XP penalty.


Very frustating to be honest, especially in combination with the "penalty" mechanics, that basically punished me for encountering a bug.