Objects won't ungroup

Objects will group together but can’t be ungrouped. I tried the key command and doing it from the edit menu. This was happening to me in earlier versions.

Specs:
D5 render V 2.3
rtx 3090
Driver up to date

Hi, how does it look in the object list of D5 Render?
image

D5 can only recognize its own groups, and it cannot keep group hierarchy from modeling software.

It looks like I can ungroup them from the object list but not from the Edit menu. Is this a bug maybe?

Yeah, then it can be a bug. Could you reproduce the issue now?