bug with boss dead outside of the boss room

[still crest]

the boss is defeated when it is trying to use skill and flying to the left of the boss area. No one can get the reward and cannot continues to the next stage or get into the white dream door, all stuck in the boss area.

[vagrant solstice]

Same issue

I wish there was an end run option, or something. I can only save and quit which doesn't get my rewards I think