When I want to assign an entry to a subgroup, I have to first expand the parent group and then drag-and-drop my entry in the appropriate subgroup. The problem is that when I expand the group, by clicking on the arrow on the right, the group gets activated (the entry table only shows the group entries) and, therefore, I have to go back to "All entries" and locate my entry again. The parent group gets activated when collapsing it as well.

This problem did not occur in earlier versions of JabRef. It would be very convenient to have this fixed. I'm using JabRef 5.3--2021-07-05 in Ubuntu 20.04. I had also reported this issue here.