I think I have found it interesting bug with iMessage group chat

Have you ever been removed from an iMessage group chat?
Well, somethings up with the iMessage system lately.
At least in mine and some other people’s cases.
Sometimes when you get removed you get added back after awhile. You ask who added you back and everybody says they didn’t add you back
It’s a glitch in the system.
Has anybody noticed this random glitch