We have seen cases where Firefox tries to use the Twemoji font that only includes emojis and not normal ASCII characters for displaying Italic text. Is this happening in your case as well if you check the font that is used in the Font tab in the Inspector ? You can check in the <b>Rules</b> tab in the right panel in the Inspector what font-family is used for selected text. You can check in the <b>Font</b> 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. *https://developer.mozilla.org/en-US/Tools/Page_Inspector/How_to/Edit_fonts ---- *[/questions/1297372] Fonts not displaying properly on certain sites *[/questions/1294803] Firefox Not Displaying Characters Correctly *[/questions/1247403] All my icons are completely garbled, and there is no sound.

Yes you're right, it's using the Twemoji font? How do I fix this?