[Simple Timeline] Clips are not painted when switching from advanced timeline
@jeff
Submitted by Jeff F.T. Assigned to Jeff F.T. @jeff
Description
I'll be attaching a short screencast demonstrating this problem: when creating clips in the advanced timeline, the clips are not painted when switching back to the simple timeline.
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=430686