New comment by piekay on void-packages repository

https://github.com/void-linux/void-packages/issues/50829#issuecomment-2183561484

Comment:
> More likely, yes, but it could also be some lib provided by Void. I suppose we may know when the next version is released.
> 
> --
> 
> neoklis

The entire point of Flatpak is not having to use system libraries, so that is very unlikely.

https://docs.flatpak.org/en/latest/dependencies.html

`One of the key advantages of Flatpak is that it allows application authors to bundle whatever libraries or dependencies that they want. This means that developers aren’t constrained by which libraries are available through Linux distributions.`

It isn't impossible that it is a Void library, but increasingly unlikely. I currently believe this to be a Firefox issue. Since the Firefox Flatpak is officially maintained by Mozilla I would recommend reporting the bug directly to them