Why does the timelines counter disappear?

I'm working on a project and more and more frequently my timeline counter disappears. I'm not able to move the curser and edit. I have to save, close Captivate, and re-open. Even at this point, it only reappears sometimes.

I've had this problem in the past but its happening more and more and causing production to slow!

Please help, what can I do? Has anyone else had this issue?

Windows 8

Captivate 8

I've had this problem working on other PCs as well fyi

Thanks in advance Captivate experts!!!

Sabrina