Oh! I just did some quick experimentation and solved the bug on the user side.
If you are in the bugged state for any reason, you can go to Your Computer and click the correct button to shut down your computer. That then restores your ability to use Esc, regardless of how you lost the ability to use Esc.
If you are in the bugged state for any reason, you can go to Your Computer and click the correct button to shut down your computer. That then restores your ability to use Esc, regardless of how you lost the ability to use Esc.