When I have 2 windows open on my screen, sometimes something changes suddenly and I can't see them both at the same time.
Please give me advice, if you can.
Please explain; I can't see them both at the same time.
Please explain the problem in detail. What happens? What is/are the exact error message(s) ?
Is there you are using an old version of Firefox?
https://support.mozilla.org/en-US/kb/update-firefox-latest-version?cache=no Did you update Firefox to the latest version?
Version 92.0.1, first offered to Release channel users on September 23, 2021