"Request to Join Group" from a community doesn't work across servers

Right click → “Request to Join Group” on someone on another server (maybe outside grouped servers specifically?) gives the error “Cannot find player ‘<name>’.”

Indeed, C_PartyInfo.RequestInviteFromUnit ‘forgets’ the realm name, despite it getting passed in every situation I tested. Doesn’t just affect communities, but guilds as well.
Since that is a core function, I don’t see a way to fix that via an addon.

Note: requesting an invite works when the player is a Battle.net friend since that goes into a BN-specific logic.

Still an issue as of 11.1.7

Can’t request to join anyone from my guild

same problem if someone requests to join my group i see the text message for it but no pop up for actually accepting them to my group so i cant invite alot of people when leading groups / raids anyone know a fix for this

Also having this issue. A reload sometimes works.