Hey, I have already read the other (closed) forum topics. I have the problem, that on some websites all letters from s to z aren't displayed. When I copy the text and paste it to a text editor all letters are there. Here's what I tried according to other forum topics... - In the font properties all is set to standard fonts for 'latin' and 'other' (sorry I use Firefox in german so I don't know the correct english terms) - Disallowing webpages to use their own fonts works, but it's no option as the websites now all have ugly fonts and don't look as they're meant to be. I use FF 90.0.2 (64-Bit) on Windows 10 Home. The problem occurred right away after I installed FF on a new computer. I have also tried syncing to my account and de- and reinstalling. Same problem all the time. The problem does not occur in other browsers, like Chrome, Edge, Opera. Only in FF... Any idea what I could do? It would be sad to use another browser in the future, but since I'm also a web developer it's really not an option to work like that... Any help is highly appreciated. Cheers, Sven