P.S. Mathias. I've noticed that after moving file from left to the right panel, right panel is updated but left is not. After moving from right to the left both panels are updated.
(Please create separate posts for bugs.. )
I can not reproduce that.. Is the locations that is not updating a NAS or network share ? (Some NAS and networked computer sends invalid notification for renames. Move file on same partition is the same as a rename)
Normally all Explorer Panels will be told when by the OS when a viewed path is changed.
I might be that something happened and that tab you had open fail to tell the subsystem that it would also receive filesystem changes.