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Comments on How do I fix Firefox fonts having extra spacing and weird numbers on Ubuntu?

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How do I fix Firefox fonts having extra spacing and weird numbers on Ubuntu?

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After upgrading one of my computers to Firefox 99.0.1 on Ubuntu, it's started rendering some fonts—specifically DejaVu Sans and Arial, although there may be others—incorrectly. The actual words are fine, but everything has about 14px of extra spacing after every word, and all the numbers are rendering as what appear to be emojis, though not like any emoji number I've seen before. All numbers are just oddly-spaced gray images with gradients.

It happens in webpages using one of those two fonts and in the UI elements. It happened on both Ubuntu 21.10 and 22.04. It doesn't happen in any other program, just Firefox. I've tried uninstalling and reinstalling it.

Screenshot of Firefox showing text issues

Does anyone know how I can fix this?

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2 comment threads

Maybe `fc-cache rebuild` is worth a try (here some background info on the command https://www.geeksfo... (1 comment)
Tried moving ~/.mozilla out of the way? (1 comment)
Tried moving ~/.mozilla out of the way?
Canina‭ wrote about 2 years ago

Firefox stores your profile with settings in a hidden directory named .mozilla (actually .mozilla/firefox/<something>) under your home directory; in *nix parlace, ~/.mozilla). If you uninstall and reinstall the browser through the package manager, that would normally leave that directory untouched. Have you tried moving it out of the way and let Firefox create a brand new profile uncontaminated by anything previous? Doing so will completely reset your browser including bookmarks, settings, themes and add-ons, which will tell us if there's something funky about your browser profile or if it is actually something on your system that causes this.

In a terminal, try: mv -v ~/.mozilla ~/.mozilla.286378 (the numbers being the post ID for this question, since that seems reasonably likely to be unique; you can substitute something else if you want to.)

Renaming instead of deleting will allow you to easily restore everything later.