"Failed" Citadel

Cleared Citadel, got boss loot (dropped 2 fragments, woo)!
Went back to hive to unload, got new waystone, but can't progress past Citadel. hmm. Odd. Says "In Progress" so go back in portal, everything dead. 0 monsters remain. Wait a bit, come back, map is failed. Can't retry, can't pass, have loot... bugged?? This is the third one it's happened to for me.

Same situation for me today (8 Feb) - I have cleared two citadels, Iron and Stone, no more bosses, in the second one I even cleared all mobs - both failed because they are impossible to complete. Tried go and back through portal, restart the game, pick up all loot after main Boss, nothing helps...

Bumping. I've seen this on Iron Citadel a lot, but now I'm experiencing the same thing on Stone Citadel. Explored entire map, killed 100% of monsters, killed boss, never "completed" and then it "fails" even though everything's dead and I got my fragments.

I'm wasting like 20 minutes a map re-checking just wondering if something is wrong in the count, but there's nothing there to kill. With Geonor it sometimes still shows his orange skull on map even though I'm looting his corpse.

Every single citadel map I've completed has had the same bug. Boss dead, fragments looted, all mobs dead .... but world map displays "Map Failed" and map nodes flowing from it not accessible via the citadel directly.