Firefox font weight renders too bold
I'm using Firefox 65.0 and MacOS Mojave and since the last Firefox update the font weight renders too bold. The issue is affecting bookmarks, searching bar text, website content etc. I've unchecked 'Use hardware acceleration when available' and tried other possible solutions that I found online such as set all font to default, reinstall browser, launch it on safe mode, but nothing seems to help. The issue doesn't happen in other browsers.
Additional System Details
- Shockwave Flash 32.0 r0
- User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:65.0) Gecko/20100101 Firefox/65.0
See bug 1495282.