Microsoft 365 online will not load pages correctly
Office online will not load correctly. I've attached an example of how Excel loads. This is happening with Word as well. Cache was already cleared and the browser was reset as well.
Wšě wotmołwy (2)
Looks like a problem with accessing local fonts and Firefox has switched to a last resort font that displays all glyphs as a '?'.
You can check in the Rules tab in the right panel in the Inspector what font-family is used for selected text. You can check in the Fonts tab in the right panel in the Inspector what font is actually used because Firefox might be using a different font than specified by the website. If the Fonts tab is hidden, click the down arrow at the right end.
In Firefox 119 Fingerprinting protection has been added to Enhanced Tracking Protection in Strict/Custom mode (Suspected fingerprinters) what affects accessing local fonts.
To include user installed fonts, modify this pref on the about:config page: privacy.fingerprintingProtection.overrides => -FontVisibilityBaseSystem,-FontVisibilityLangPack You can open the about:config page via the location/address bar. On the warning page, you can click "Accept the Risk and Continue" to open about:config.
Does it still happen in Troubleshoot Mode?