That's not uncommon for (custom) dev builds, or if you have a plethora of addons that manipulate core browser behavior. I have a user and dev profile on firefox

That's not uncommon for (custom) dev builds, or if you have a plethora of addons that manipulate core browser behavior. I have a user and dev profile on firefox. But that makes you more unique and a better target. "My browser firefox fingerprint appears to be unique among the 3,230,950 tested so far and 21.62 bits of identifying information, mostly acceptable to be shared." But this is just a demo, a real attacker could get much more info out of it, I'm not protected against this. Why do you think that you have gotten that result? Did you compile Chromium with some special flags?