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Weird graphics bug when hovering over tabs

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  • 1 har dette problem
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  • Seneste svar af cor-el

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Recently I've been experiencing a weird bug when hovering over tabs (see attached screenshot). This started not too long ago, maybe a month or so. It happens randomly and disappears if I relaunch Firefox. Initially I thought that this only occurred when my computer is connected to an external display, I'm using an old MacBook Pro with an integrated Intel graphics chip. So I figured maybe it was struggling with the resolution of my external monitor. But now it happened without it being connected to the monitor. Has someone experienced this?

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Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Safe Mode start window

For more info about userChrome.css, see:


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