I have the same problem and clicking around or on the window doesn't help me. I figured out that if I go to "Edit" and "undo change" and then click the window again, that nothing is really undone, but it returns my ability to use the controls

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi