Tor Browser Security Level

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This is what the popup is saying, see this post: add Tor Browser first startup popup to ask whether security slider should be set to safest - #9 by Patrick

Most important quote:

All this would do is copying file /usr/share/torbrowser/security-slider-highest.js to ~/.tb/tor-browser/Browser/TorBrowser/Data/Browser/profile.default/user.js.

cp /usr/share/torbrowser/security-slider-highest.js ~/.tb/tor-browser/Browser/TorBrowser/Data/Browser/profile.default/user.js

This is the related source code:
tb-starter/usr/bin/torbrowser at e86a794ceb21f16acdce2a7d7c34e3214612d51c · Kicksecure/tb-starter · GitHub

To look at that file:

cat ~/.tb/tor-browser/Browser/TorBrowser/Data/Browser/profile.default/user.js

To undo what this file is doing, just delete that file:

rm ~/.tb/tor-browser/Browser/TorBrowser/Data/Browser/profile.default/user.js

To not have this changer ever applied, click “No” when this popup appears. (Requires a new Whonix VM or Tor Browser re-installation.)

Whonix ™ Tor Browser Differences:
https://www.whonix.org/wiki/Tor_Browser#Whonix_.E2.84.A2_Tor_Browser_Differences

Please learn about: Tor Browser Functionality on Different Platforms:
Tor Browser Essentials

Then please try to reproduce this in on a plain Debian VM. Such as a Debian buster VM.
Non-Whonix. I.e. outside of Whonix. If the bug is reproducible there too, it should be reported to The Tor Project.

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