[tbb-bugs] #22137 [Applications/Tor Browser]: Provide the same scrollbar size across different platforms

[Tor Bug Tracker & Wiki]

#22137: Provide the same scrollbar size across different platforms
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 Reporter:  gk                             |          Owner:  tbb-team
     Type:  defect                         |         Status:  new
 Priority:  High                           |      Milestone:
Component:  Applications/Tor Browser       |        Version:
 Severity:  Normal                         |     Resolution:
 Keywords:  tbb-fingerprinting-resolution  |  Actual Points:
Parent ID:  #18283                         |         Points:
 Reviewer:                                 |        Sponsor:
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Comment (by concerneduser):

 Obviously patching is better no doubt.

 Though seeing how old the issue here and over at mozillas tracker is I
 would highly suggest to include the userChrome while this is "natively"
 implemented. I did not know that different GTK themes provide different
 widths this should be considered a severe fingerprinting issue. This
 should be resolved as fast as possible. We all want everyone to look the
 same right?

 Another, very easy, way to resolve this is to simply set the env var
 GTK_THEME=Adwaita since Adwaita is the default GTK theme. Though keep in
 mind Tor should strive to have every OS display the same clientWidth (ie
 1000), meaning this as well should only be a temporary solution.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22137#comment:11>
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