When I click on the "Tell me what you want to do" button in Studio 2019, the window flashes up briefly, then disappears.  I can type, but it's like typing in an invisible window.  I can't see what I'm doing, so the function is unusable.

This happened before and after I installed the Service Release 1.  I've restarted Trados and it's still happening.  I also tried adding the function to the quick access toolbar and accessing it from there, but the problem persisted.

I've also had similar problems with drop-down boxes, especially when selecting source and target languages for a new document.  The drop-down boxes don't appear properly, and I have to navigate blindly using the up and down keys.

My computer is a Dell XPS 13, running Windows 10.

Can anybody help?  Has anybody experienced similar problems?