We’re sorry this isn’t working for you. We can’t reproduce this. Can you can figure out any pattern to when it happens (every time or only sometimes? On a particular computer? On a particular user account?) If you could take a screen recording of it (including the steps leading up to it) maybe that would help us figure out how to reproduce it. We’ve also added a section on attaching console logs to our helpful bug reports, so maybe including the logs might help.
Sorry, I did figure this out. I forgot to report my findings. It appears to have been my own fault, I was running a piece of software called Synergy that allows you to use another keyboard and mouse across a network to control a remote computer. It was interfering on the local keyboard I was using.