dragging clips further to the end of the timeline is not possible
@jeff
Submitted by Jeff F.T. Assigned to Brandon Lewis @brandon_lewis
Description
Partly because of bug #T2068 (in this case, if the timeline playhead is not in the current view, you will get the timeline jumping around like crazy), and partly because there is no "drop zone" at the end of the timeline.
This zone exists when the timeline is "short enough that it doesn't scroll", but not when it's big. So, to solve this issue, we need the timeline to be always a bit longer (10 seconds?) than the actual length, to allow dragging clips into its "dark zone".
Imported from https://bugzilla.gnome.org/show_bug.cgi?id=575959