When I try to rearrange elements on the timeline, I often find that the elements "hide". I can see them, but I can't move them to where I want them to go. 

The only fix is to restart Videoscribe.

Do you have any other ideas about how I can prevent this, when moving elements around the timeline?

Everything in the following thread....Numbers 3,4,5 and 10 especially: TIPS to Avoid or Fix Videoscribe freezes, crashes, slowdowns, failure to export, or erratic behaviours.

-Mike (videoscribe user)

Also, upgrading to VideoScribe 2.1.1 will help resolve these issues.