Wikipedia Android is contributed anonymous if username is in Korean.
@Ara Can you provide some more information, and steps that we can take to reproduce this problem? We will not be able to investigate this otherwise. Thanks.
@Ara please confirm it whether this is what you meant or not.
@revi This is true. When I edit page KBS 3TV at Korean Wikipedia, I could see contrubution with IP address in history page.
I cannot reproduce the issue with a Korean user name, see https://test.wikipedia.org/w/index.php?title=Test&diff=223933&oldid=221376.
I think this this the same as T75086.