Blight in maps don't complete

In multiple maps over last 2 days blight encounters won't complete.

Facts:
- I've used blight scarabs to spawn encounters in red tier maps
- All monsters cleared from blight and whole map - monster count 0
- I've spawned zombies / and used flesh offering during encounter
- I've left the map and re-entered
- I'm unable to start another blight encounter as the first one isn't complete

Any ideas how to resolve issue / avoid the bug?

It's a bug which have been for a long time, and ggg strangly have not managed to fix yet... The reason for the blight can not finish are that it's stuck in the terrain, so choosing maps with less terrain will improve the fails a lot. I think it's mostly stones and treas which makes it fail to spawn, A bit unsecure on big walls as I have not experience with that. It's the same bug in Legions where Legion bosses get stuck in the terrain aswell and will never die and give the revard.... I hope ggg someday manage to fix it as it's kinda annoying!

Can confirm, bug is still here. A blight monster got stuck inside a Crimson Iron deposit and is now invulnerable and I cannot complete the blight.