On: Stowaway – Take the window seat on any plane or satellite overhead

[eutropia]

another firefox on linux user (cachyos), and it loaded up and worked flawlessly for me. anecdata!

[opello → eutropia]

For me it failed to load (with the same console.log messages as above) in a multi-account container tab, and crashed Firefox in a Private Browsing window.

[clsec → opello]

Worked fine for me in a temporary container in FF on Ubuntu. I have uBO, Privacy Badger & Disconnect extensions enabled.