Well this is frustrating… I still can’t recreate the problem even when running 10.15.4 Beta (19E224g). I’ve tried in my account, in a guest account, and in a new test user account.
Can you try in your guest account and see if you still get the crash?
I’m at a loss here, not being able to reproduce myself. Things to try different user account on your own computer. Different Mac. If you could get it working in one place maybe be easier to figure out what is different.