Websites Rendered with Border Within TOR Window

With the update to v9.0 all websites render in the TOR browser with a border within the window and the scroll bar inset from the right-hand border of the window. Please see the attached screen capture.

Trac:
Username: TornadoGR1

added component::applications/tor browser owner::tbb-team priority::medium reporter::TornadoGR1 resolution::not a bug severity::normal status::closed type::defect labels

Trac:
Username: TornadoGR1

Screenshot

Trac:
Username: TornadoGR1

Tor Browser in its default mode is starting with a content window rounded to a multiple of 200px x 100px to prevent fingerprinting the screen dimensions. The strategy here is to put all users in a couple of buckets to make it harder to single them out. That worked so far until users started to resize their windows (e.g. by maximizing them or going into fullscreen mode). Tor Browser 9 ships with a fingerprinting defense for those scenarios as well, which is called Letterboxing, a technique developed by Mozilla and presented earlier this year. It works by adding white margins to a browser window so that the window is as close as possible to the desired size while users are still in a couple of screen size buckets that prevent singling them out with the help of screen dimensions.

Trac:
Owner: N/A to tbb-team
Resolution: N/A to not a bug
Status: new to closed
Component: Webpages to Applications/Tor Browser

Is there a way to disable this feature, e.g., through the advanced configuration if one accepts the risk?

Trac:
Username: blochberger

Replying to blochberger:

Is there a way to disable this feature, e.g., through the advanced configuration if one accepts the risk? Not yet, see #32325 (moved) for plans to do enable this

closed

moved to tpo/applications/tor-browser#32229 (closed)