Poe2 - Barrier after Boss fights did not disappear - stuck in Boss Area - Rare Map Fail

It happened now a few times. After killing the boss, the red barrier didn't disappear. Usually the map counts as completed, I just can't finish  additional map content. But now I had a rare map Castaway and I stuck again in the boss area, can't place the satchel for explosion in the map center. I had to leave and open a new map, the rare Map counts now as failed. This is very annoying.