In some entries in the panel (in my case, showing partitions of /etc/fstab), the contextual menu entries: hide "<device>" and show all devices are separated by an horizontal line when the partition is not mounted, but are together when the partition is mounted. Shouldn't those menu entries always be separated by an horizontal line?
This does not happen for me with Dolphin 18.04. The "Show all devices" entry should only appear if you right-click in a free place in the panel. Therefore, those two options are not separated by an horizontal line because they appear in different context menus. Can you confirm that this issue has therefore disappeared? Thanks!
Confirmed. It is fixed.