Have you tried enabling webgl, which by default is disable on Librewolf? You can do that by overwriting the corresponding setting, as it can be done for any Librewolf setting, in particular the webgl override needed is:
defaultPref("webgl.disabled", false);
If you do, Librewolf recommend using the extension "CanvasBlocker" given the fingerprinting allowed by webgl. There's a settings doc BTW..