When creating a new file or directory in the treebrowser plugin using the context menu, the contents of the tree are duplicated. No files are duplicated, just the view is twice in a row. A refresh will remove the duplicates, but this looks pretty strange when it happens. Visibility of the bookmarks and toolbar don't seem to make a difference.
Linux Mint Debian Edition 64-bit MATE - 3.10-2-amd64 #1 SMP Debian 3.10.5-1 (2013-08-07) x86_64 GNU/Linux
geany 1.24 (git >= dc44360) (built on 2013-11-12 with GTK 2.24.20, GLib 2.36.4)