On Thunar 1.5.2 it seems that panel doesn't autohide if you have the 'Places' launcher on the panel. After removing 'Places' i didn't encounter any lockdown.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/967857 Title: Auto Hide for Panel 2 ("Dock" style Panel) randomly fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xfce4-panel/+bug/967857/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs