Klaguuran expidition in map chests disapear

Since the last 2 days when activating a kalguuran expedition in a map there is a bug.
The bombs go of and show the underlying chest. After defeating all the monsters the chests disapear. I only see the loot dropped by monsters.

I have a loot filter. After a couple of disapointments and wanting to try and fix it I disabled the loot filter. Afer trying once again the chests disapear non the less.
In both options I tried pushing the Z key and Alt key. Both ways dont lead to me seeing the loot chests.