Telegram apparently had a bug earlier today where it treated all group admins as anonymous admins, no matter if they were actually anonymous. If Executrix updated its cache for your group in that timeframe, admins may currently not be recognized as such by the bot.
To fix this, have an elevated user use
/cache
in your group if you have one. If you don't have an elevated user available to do it, just wait - the problem should fix itself within 5 hours, when the bot updates its cache the next time. ๐บ