That looks like a missing font, and there are 2 things I can think of that might be causing it:
Your browser isn’t downloading it. Which might be because of a security setting. So check that. Those kind of resources are typically downloaded from a 3rd party. And 3rd parties are typically blocked by extra security settings.
It could also be the noto font you tried to add. Remove that and install it from the extra repository:
$ pamac search noto
[...]
noto-fonts [Installed] 20201226-2 extra
Google Noto TTF fonts
[...]
So it can easily be installed with:
pamac install noto-fonts
Hope this helps!
Edit:
It could also be the noto emojis, also available in the extra repository:
$ pamac search noto
[...]
noto-fonts-emoji [Installed] 20211101-1 extra
Google Noto emoji fonts
[...]
So they can just as easily be installed with pamac: