02-21-2023 07:43 PM - edited 02-21-2023 07:46 PM
02-22-2023 05:28 AM - edited 02-22-2023 05:28 AM
Try validating your fonts: Install and validate fonts in Font Book on Mac.
If the issue persists, and only happens on Firefox, you can use this form to report it: https://webcompat.com/issues/new
02-28-2023 05:23 PM - edited 02-28-2023 05:24 PM
Thanks, but it's a web font, not on my local system, so I don't imagine FontBook has any effect on it...