Black and the picture of 06-F.png…
That “ghost picture” begins always at the end of the timeline. (Also if I add a new part into a track, which lengthen the timeline.)
BTW: I even can set the seeker beyond the timeline by mouse
There is a corruption in your timeline, but I do not know the steps to reproduce it and will be unable to fix it until it happens to me (or another developer experiences it and fixes it). Meanwhile, I suggest you search the project file XML for the picture in a text editor.