For me (Mi 9T) Android Auto works fine but I cannot use Screen2Auto (S2A, to use additional apps, not allowed by Google) upon updating to 12.5.2 few days ago
I still see Screen2Auto on infotainment (using AA AIO patcher to enable S2A to show in AA) and when I open S2A I see icons for apps (YT, Chrome, etc) I have enabled for S2A.
However, when I click to any of the app, it opens on the phone but does not 'project' to infotainment
Everything worked perfectly few days ago with Xiaomi.eu 12.5.1, before updating. I even reset and reconfigured AA for Phone Screens, AA AIO Tweaker, Screen2Auto but no avail.
I think, it's up to the update of Google Play Services in 12.5.2
Sorry for off-topic (but if anybody else using S2A?)