Pink screen shows up after undo of a ripple delete

A pink screen seems to replace a blank clip between the track header and the first clip after undo.

Steps to reproduce:

  1. Open a video, image, or audio file.
  2. Drag and drop it to the Timeline. Preferably set an In and Out points before drag and drop.
  3. Move the clip so that there is some space between the track header and the clip. Make sure that this is the only clip on the timeline.
  4. Ripple delete that clip.
  5. Undo.
  6. Make sure that the playhead is somewhere between the track head and the clip that just reappeared.
  7. A pink screen shows up in the player.

The pink screen disappears if I move the clip again to anywhere in the timeline. If I export without erasing this pink screen, it appears as a white screen in the exported file.

Tested on v21.10.31 on Windows.

I also reproduce this on Linux.

Thanks for your report. This is fixed for the next release.