Hi, Thank you for reaching out! Would you mind [https://bugzilla.mozilla.org/enter_bug.cgi?product=Firefox&component=Untriaged reporting that on Bugzilla], Mozilla's bug tracker, so that the developers could take a look? We'd also appreciate you sharing some more details: * Your OS version * Your [[Find what version of Firefox you are using | Firefox version]] * Whether you use several monitors * Whether the issue persists if you [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems#w_turn-off-hardware-acceleration | toggle hardware acceleration in Firefox settings]] If you don't feel comfortable with filing a bug on Bugzilla, just let me know, post the necessary info here, and I'll create a bug for you.

Hi there, A quick update on the issue. It's now tracked under [https://bugzilla.mozilla.org/show_bug.cgi?id=1993474 bug 1993474], and the fix targets Firefox 147. This version will be released on January 13.