Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox 91 graphics and UI messed up

  • 1 பதிலளி
  • 1 இந்த பிரச்சனை உள்ளது
  • 5 views
  • Last reply by cor-el

Basically, PC and Mac OS< updated Firefox 91, and get these lines and missing graphics. Slow. Reinstalled. Refreshed. Fresh install. All 64 bits Win Home and Mac OS... WHAT IS GOING ON? This is the first time ever, in all browsing history, that a browser comes with lines or missing polygons...It is bad enough that I took refuge with Safari or Chrome. Even Check box below, "Email Me" I cannot see a checkmark appearing..

Basically, PC and Mac OS< updated Firefox 91, and get these lines and missing graphics. Slow. Reinstalled. Refreshed. Fresh install. All 64 bits Win Home and Mac OS... WHAT IS GOING ON? This is the first time ever, in all browsing history, that a browser comes with lines or missing polygons...It is bad enough that I took refuge with Safari or Chrome. Even Check box below, "Email Me" I cannot see a checkmark appearing..
Attached screenshots

All Replies (1)

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.