hi, could you try to find a regression range for this using the tool from https://mozilla.github.io/mozregression/? thank you

You can check in the Font tab in the right panel in the Inspector what font is actually used for selected because Firefox might be using a different font than specified by the website.

• "3-bar" menu button or Tools -> Web Developer
• https://developer.mozilla.org/en-US/Tools/Page_Inspector/How_to/Examine_and_edit_HTML
• https://developer.mozilla.org/en-US/Tools/Page_Inspector/How_to/View_fonts

Could be related to the removal of Cairo (D2D) for rendering.

• /questions/1268377 restore Cairo as rendering backend

Here's a screenshot to go along with cor-el's description of using the Inspector. (Attachment below the post is full-size.)

i think the font is good. I have this now on 2 pc's after update to 69.0.1.

Solved, there is an other font folder: C:\Users\[username]\AppData\Local\Microsoft\Windows\Fonts

Log in in safe mode with another admin account and delete the fonts in that folder. restart pc, login and everything works fine. Problem fonts in my case where Arial.

Takes me 3 working days to find out.

thephantom_nl said

Solved, there is an other font folder: C:\Users\[username]\AppData\Local\Microsoft\Windows\Fonts Log in in safe mode with another admin account and delete the fonts in that folder. restart pc, login and everything works fine. Problem fonts in my case where Arial. Takes me 3 working days to find out.

You are a god and a saint. Thank you for posting your solution rather quickly and not just leaving it like so many other dead topics on this matter.

This solved my same issue and helped me when I was pulling out my hair trying to do web dev stuff and it looked different on two different browsers. Thank You!