The Wikipedia Alpha Android app seems to have notifications about talk page mentions. This is awesome! A long-awaited feature.
I did find a little display bug with it: The text direction of the notifications appears to be set automatically, according to the first letter of the text. Or maybe it's even always LTR.
It should instead be set according to the user interface language of the app.
Here are a few screenshots that demonstrate the problem:
The above is a drawer notification about a talk page mention. The language's phone is Hebrew, and the notification comes from the Hebrew Wikipedia. Note that on the last line of the notification the full stop is on the right-hand end of the line. Since the text is right to left, the full stop is supposed to be on the left-hand end of the line.
Another example:
This is the notifications archive. Notice how the usernames "Odder" and "Lucas Werkmeister" appear on the left-hand on the first line. They are supposed to appear on the right-hand end of the line, because they are in the beginning of the notification.