Citadel bug

I succesfuly cleared whole citadel and killed boss, got some drop loot fragment included, but on map it says citadel failed.

same happens to me almost every citadel, just had the bug in the stone citadel

0 monsters remains, boss killed, luckily got 3 fragments btw

and it says map failed so i cant go further and benefits from the tablets i put in towers around

Same bug here!