I don’t really have any further ideas on this, other than clearing out preferences as I described above. I notice that you reported the exact same problem 3 years ago.
What version of macOS are you running? Is it the same one you were using 3 years ago? Is it the same computer? Do you have another computer you could try? If that’s not possible, I would suggest setting up a new user account on your computer and test on that (it’s easy to delete the account again once the test is finished).