Resize to a multiple of 50px can't be turned off and seems to make browser fingerprinting possible
http://panopticlick.eff.org/ gives a quick overview over information that can be used to identify your browser pretty easy if some of your settings are quite unique. Unfortunately, the only thing that makes my browser unique seems to be the window size. With tor deactivated it says "one of 27" browsers has the resolution 1920x1200x24, which is my native resolution, with tor it says that the resolution 1900x1000x24 is unique. When I turn off the resizing feature in the settings, I still have this weird resolution that seems to do what it's supposed to avoid, namely weaken anonymity.
I don't know if the fact that the resolution 1900x1000x24 shall be unique is a flaw of the Panopticlick calculations, but at least it seems to be a bug that I can't disable the resizing although turning it off in the options. And I don't get the sense of rounding a native screen resolution.
Trac:
Username: anonymous