Updated from version 5.1.9 to version 5.1.12. Now the treeview is having some bugs.
If you expand the treeview and browse to a folder. Then click on the folder above in the path or on the toplevel. The documents are updated, but the treeview has still the previous folder selected. If you want to go again to that folder it is not possible, because it is already (wrongly) selected. See attached picture.
If you browse to a folder 2 levels deep, the folder above is not unfolded anymore. So you don't see the selected folder in the treeview.
I have the same problem. It looks like there is a problem between v5.1.11 where the treeview is working fine and the version 5.1.12 where there is a problem. Also trying to update to version 5.1.13 but the problem is still there.