The bookmarks pane is not synced with changes to the bookmarks file that occur outside of the Thunar process. Reproducible: Always Steps to Reproduce: 1. Open Thunar 2. Open Mousepad 3. Open Mousepad "Open File" dialog 4: Add a directory to the bookmarks 5. New bookmark does not show up in Thunar, and no amount of clicking around will cause Thunar to reread .gtk-bookmarks A real solution likely depends on Bug #1003
Fixed with revision 17169.