Had a related problem again today. After a restart of Workstation (after a crash; issue opened in different discussion), Workstation showed 3 displays of width, but only one display. I could not click buttons within the client or do anything. I tried resetting the views, going full-screen, etc. Nothing worked. Finally, I told it to go to only one display in the UI (it said it was on 3, even though it wasn't). Then I set it back to three displays and that corrected the issue.
Image may be NSFW.
Clik here to view.
Note it is only one screen, non-full-screen, but the scroll bar on the bottom and right.
I have log files, but can't seem to attach them here.