For me, this is caused by disabling the plugin "Insert Date and Time".
Thanks to Jens, using "LD_PRELOAD=/usr/lib/libpeas-gtk-1.0.so.0 gedit" to open Gedit and change Preference to re-enable the plugin solved the problem. [Ubuntu 14.04.3 & Gedit 3.12.2] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1325063 Title: Gedit preferences windows is empty To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gedit/+bug/1325063/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs