seek after moving topmost clip at the playhead position
@jeff
Submitted by Jeff F.T. Assigned to Jeff F.T. @jeff
Description
Follow up on bug #T2437
If you have a clip under the playhead and click+drag the clip to move it, you will get a black frame in the previewer. Instead, it the previewer should do a seek to update itself when the drag operation is complete.
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=615238