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Strange line at the bottom of monitor above the active display

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Hi there,

I've been searching around for an answer to this for a while and have as yet been unable to find anything.

I have a multi-monitor set up, with one of my displays being above the main display, for some reason whenever I have Firefox, and specifically only Firefox, maximised, I get a bar that's either solid white, or has a portion of the browsers task bar appear at the bottom of the display above. If I put a video into full screen, or the browser into full screen, the bar disappears, likewise if I take the window out of maximised then it also disappears.

The only thing that I can think that might be contributing to this would be the fact that two displays have a different resolution, the main display being 2560 x 1440 and the top display being 1920 x 1080.

Any ideas to try to resolve this would be appreciated! Thank you to whoever reads this, and thank you for any possible advice to attempt to resolve this issue!

Hi there, I've been searching around for an answer to this for a while and have as yet been unable to find anything. I have a multi-monitor set up, with one of my displays being above the main display, for some reason whenever I have Firefox, and specifically only Firefox, maximised, I get a bar that's either solid white, or has a portion of the browsers task bar appear at the bottom of the display above. If I put a video into full screen, or the browser into full screen, the bar disappears, likewise if I take the window out of maximised then it also disappears. The only thing that I can think that might be contributing to this would be the fact that two displays have a different resolution, the main display being 2560 x 1440 and the top display being 1920 x 1080. Any ideas to try to resolve this would be appreciated! Thank you to whoever reads this, and thank you for any possible advice to attempt to resolve this issue!