[itake]

Do you have FF's higher levels of privacy protection enabled? With fingerprinting protection enabled, image uploading breaks. oAuth doesn't seem to work properly on some sites. Enabling encrypted DNS breaks captive portals or private VPNs.

its really easy to configure FF to break the internet.

[Insanity]

Ah, I can't recall the last time I uploaded an image to the web, so I guess I wouldn't run into this. Interesting if reproducible.