Players appear in the invitation list eventhough they have never been invited

There seems to be a bug that lets people invite themselves to a realm server, or that invites random people to realm servers.

I've heard multiple stories about a player named "bobmarlyisdead" who just randomly shows up on whitelists, and today they appeared on mine as well. They are shown as "didn't accept the invitation", but the fact that they did get one in the first place is impossible, unless they used some form of exploit or actually hacked a few of my contacts.

There were 2 posts on the /r/realms subreddit in recent history, about someone joining their realms list, even as mod, and creating havoc. Specifically this post: https://www.reddit.com/r/realms/comments/gnd85g/help_randoms_keep_joining_our_realm/ and this one: https://www.reddit.com/r/realms/comments/g6ui2t/realms_hacked/ .