Updated FAQ

FAQ.md

@@ -82,6 +82,7 @@ Related questions:
 * A preview of a message text doesn't (always) appear on Samsung watches because [setLocalOnly](https://developer.android.com/reference/androidx/core/app/NotificationCompat.Builder.html#setLocalOnly(boolean)) seem to be ignored. Message preview texts are known to be displayed correctly on Pebble 2, Fitbit Charge 3, Mi band 3, and Xiaomi Amazfit BIP wearables. See also [this FAQ](#user-content-faq126).
 * A [bug in Android 6.0](https://issuetracker.google.com/issues/37068143) causes a crash with *... Invalid offset: ... Valid range is ...* when text is selected and tapping outside of the selected text. This bug has been fixed in Android 6.0.1.
 * Internal (anchor) links will not work because original messages are shown in an embedded WebView in a scrolling view (the conversation list). This is an Android limitation which cannot be fixed or worked around.
+* Language detection [is not working anymore](https://issuetracker.google.com/issues/173337263) on Pixel devices with (upgraded to?) Android 11
 
 ## Planned features