System Theme not respected on Linux

https://blog.torproject.org/comment/292371#comment-292371

Tor Browser 10.5.2 on linux doesn't follow system theme as before.
I have a dark desktop and before Tor Browser follows the dark theme, now it has its default light theme.

Could be related to #27476 (closed)?

Edited Jul 20, 2021 by Matthew Finkel

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