Abyssal event bugged

Abyss events are not clearing correctly, killed ALL enemies in a map and it won't complete the last part. I got one elite spawn and 0 chests from one of the larger spawns which isn't normal, even with the 0.4 nerfs to abyss.

This has been happening occasionally since before 0.4 but has only got more frequent with the 0.4 patch. Whatever you added/changed between 0.3 and 0.4 seems to have broken a lot of things.