Dragging clip on timeline just grabs "Shadow"

[Bryan233923755bq7]

https://youtu.be/gWo0VunuSKs

See above video. 

I keep having this issue where I try to drag a clip on the timeline and it grabs a sort of shell but not the clip. 

What's going on?

Note: You can't see the mouse in the video. I am just trying to move that pice of the video

[Ann Bens]

Make new project and import old one: see how that goes.