[FirefoxNightly] ¿System MathML fonts not detected?

[DeerOfBlades]

Hi everyone !
I've started to use the flatpak version of nightlies recently and having issues with MathML fonts. I have a full-blown and working installation of texlive (fonts, collections, so on) under Fedora 26 and I can't switch MathML fonts on Nightly (maybe the flatpak/sandboxed version can't access system fonts?) using this extension:

• https://addons.mozilla.org/en-US/firefox/addon/mathml-font-settings/

After installing MathML-fonts addon, the MathML Torture Test responds to font changes and I can switch to the font I want (Latin Modern) and all the other MathML sites seem to respond accordingly.

So, came to report here so other people know, thanks for reading ! o/

[stransky]

As a workaround you can install the wayland firefox from copr repo (https://copr.fedorainfracloud.org/coprs/stransky/firefox-wayland)
That package is not sandboxed and should run a the system one.