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Firefox has some very strange problems when visiting certain websites

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  • Last reply by cor-el

Clint B
Clint B
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I just upgraded to to Mac OS Catalina and Firefox 75, and I've noticed two very strange and specific problems on certain websites.

-On Wikipedia the number 9 is displayed as an underscore _ So the year 1669 looks like 1__9, etc.

-On Blogger, in the compose mode, typing lowercase y makes nothing appear, and typing lowercase z produces quotation marks!

I tried using a different (brand new) keyboard, and the problem remained.

I tried those two websites in the Safari browser, and there were no problems.

I just upgraded to to Mac OS Catalina and Firefox 75, and I've noticed two very strange and specific problems on certain websites. -On Wikipedia the number 9 is displayed as an underscore _ So the year 1669 looks like 1__9, etc. -On Blogger, in the compose mode, typing lowercase y makes nothing appear, and typing lowercase z produces quotation marks! I tried using a different (brand new) keyboard, and the problem remained. I tried those two websites in the Safari browser, and there were no problems.
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FredMcD
FredMcD
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Clint B said

. . . . on certain websites

How many websites are affected? Are they related?

Type about:preferences#content<enter> in the address bar. Across from fonts and colors, press the Advanced button. On the bottom, turn on Allow Web Sites To Choose Their Own.

Fonts Information - Detected via Flash http://browserspy.dk/fonts-flash.php?detail=1

FredMcD
FredMcD
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Many site issues can be caused by corrupt cookies or cache.

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

If there is still a problem, Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Did this help?

While you are in safe mode;

Try disabling graphics hardware acceleration in Firefox. Since this feature was added to Firefox it has gradually improved but there are still a few glitches.

How to disable Hardware Acceleration {web link}

cor-el
cor-el
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