Yes, that’s right. But, what I say is the issue not only with Firefox. It’s also with the system apps. For the system apps, it’s fixed with changing to Adwaita. But, Firefox needs ttf-dejavu. If it’s installed by default, all of those issues will be solved.
Also, manjaro comes with Firefox installed by default, but without dejavu installed. And that’s what I am saying.
I am sorry . Those posts were between here in the forum and Reddit with the same issue.
Far from that, is there an option to reset gnome to vanilla?? The manjaro-gnome-vanilla doesn’t work.