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Upgraded MacOS: Webpages not loading fully

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  • Last reply by cor-el

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I updated my Mac laptop to Big Sur 11.5.2 and all website pages are not looking right in Firefox; missing visual elements, no colors, no visible nav links, etc. Upon relaunch multiple extension windows open. I’m stuck and need it to go back to normal. Help!

I updated my Mac laptop to Big Sur 11.5.2 and all website pages are not looking right in Firefox; missing visual elements, no colors, no visible nav links, etc. Upon relaunch multiple extension windows open. I’m stuck and need it to go back to normal. Help!

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This could be a problem with High Contrast Mode on Mac.

See "New" in the release notes.

Firefox now automatically enables High Contrast Mode when "Increase Contrast" is checked on MacOS in the Accessibility settings.


Make sure you allow pages to choose their own colors.