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Firefox 91.0.1 on iMac (2019) with OS 10.15.7

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  • 1 has this problem
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  • Last reply by FredMcD

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Firefox 91.0.1 corrupting website displays on iMac (2019) with OS 10.15.7. Same websites not corrupted by Safari on same iMac. Same websites not corrupted with same Firefox and same OS on MacBook Pro.

Firefox 91.0.1 corrupting website displays on iMac (2019) with OS 10.15.7. Same websites not corrupted by Safari on same iMac. Same websites not corrupted with same Firefox and same OS on MacBook Pro.

Chosen solution

cor-el said

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.

  • Settings -> General: Fonts & Colors -> Colors: "Override the colors specified by the page with my selections above"

Try "Never" if the default "Only with High Contrast themes" isn't working.

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Chosen Solution

cor-el said

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.

  • Settings -> General: Fonts & Colors -> Colors: "Override the colors specified by the page with my selections above"

Try "Never" if the default "Only with High Contrast themes" isn't working.