When I have 2 windows open on my screen, sometimes something changes suddenly and I can't see them both at the same time.

2 năm trước

06:57, 20/10/2021

Please give me advice, if you can.

Answer 1 · 2021-10-20 06:57:56

11:28, 20/10/2021

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