Localization is broken in Tor Browser 9 on Android
Take a Tor Browser 8.5.6 on an Android system in locale
foo is a locale we actually ship).
If you start Tor Browser for the first (and subsequent) times on that system you see e.g. the connect button in locale
foo and the onboarding in locale
foo, the whole browser UI in locale
about:tor in locale
Now, remove 8.5.6 and install 9.0 or 9.0.1 (I actually just tested with 9.0.1 but remember vaguely seeing this weirdness when testing 9.0aX builds even though I did not put 1 and 1 together back then :( ).
If you start Tor Browser for the first (and subsequent) times on that system you see e.g. the connect button in
en-US and the onboarding in
en-US and the browser UI in
en-US. However, Torbutton related things like the slider and
about:tor are still shown in locale
This bug has the nasty consquence, I think, that the locale for the donation campaign is not properly detected. Instead, just the default link is used.