According to the upstream bugreport this is fixed in commit 528546733f1da859cb8041829abe0ae677d9a46d, which is included in GTK+ 2.17.8
-- gtk 2.17.3 causes dragging in firefox bookmarks sidebar to misdetect mouse position https://bugs.launchpad.net/bugs/398540 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs