privacy.resistFingerprinting

This settings controls whether to enable RFP (Resist Fingerprinting) or not.
I suggest not disabling it, rather enabling Canvas Access per website, if the website looks broken.
Disabling it negates most of the effects of LibreWolf and you'd be better using another browser instead of breaking LibreWolf.
Read what RFP does here.

Default

true

Override

no override. suggested to leave it on.