Traceback when undoing 'ungroup' operation
@twaugh
Submitted by Tim Waugh Assigned to Tim Waugh @twaugh
Description
Created attachment 144975
backtrace
This traceback is 100% repeatable for me.
1.Drag in new clip
2.Drag clip to timeline
3.Select clip in timeline
4.Click on 'Ungroup clips' to detach the audio from the video
5.Select Edit->Undo from menu
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=597711