On bnwiki, we use Bengali numeral. Number shown in this screenshot (this appear when someone reply before you while you're writing a reply) needs to be localized. Vector-2022's language button also had this problem and they fixed it. Please fix it for reply tool also. Thank you.
Topic on Talk:Talk pages project/Replying/Flow
Thanks for the bug report, I filed it as T312033 and we'll fix it soon.
This should be fixed.