Premiere CC 2018 - Toolbar and timeline cursor not responding

I've had this issue on several of my brand new machines running Premiere CC 2018 in my lab.  We load clips into a new sequence and the cursor and the toolbar become unresponsive.  We can still scroll in the project window and the rest of of the windows are functioning as well.  To me, this indicated that the program was not locked up, it was just in issue with the sequence window.  It doesn't happen on every project, but when it does, it stops us from being able to edit.

I was not able to find a solution online or from my conversations with tech support.   I think I've stumbled on the solution by accident today, and I wanted to share it with anyone else that has had this problem.

Solution: Simply reset the workspace.  Right-click on the Editing workspace and "Reset to Saved Layout".  Everything came back.  I've found I have to do this several times in a project that has this problem, but it seems to work.