How to remove black recktangle in the upper left corner of browser window?
Recently I reinstalled my Windows 10 and downloaded the new version of Firefox Browser (68.0.1). There is a small black artifact (rectangle) in the upper left corner and it isn't removed after restarting browser or even restarting Windows. I've installed new theme but it is still there...
Gekozen oplossing
It might have something to do with a new feature called WebRender. Take a look at this thread: UI glitch: black box in the top-left corner
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Start Firefox in Safe Mode {web link}
A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?
FredMcD said
Start Firefox in Safe Mode {web link} A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?
In safe mode all is ok, no artifacts, but in normal one the problem remains
Gekozen oplossing
It might have something to do with a new feature called WebRender. Take a look at this thread: UI glitch: black box in the top-left corner
My_Cheese_Is_Slippin' said
It might have something to do with a new feature called WebRender. Take a look at this thread: UI glitch: black box in the top-left corner
Thank you, that's it! After setting gfx.webrender.enabled to true and restarting the browser there is no black rectangle anymore!
You can thank @jscher2000, he's the one that figured it out. I'm just "sharing the love"