Title pretty much sums it up. I've had it happen to me a couple of times, I've only managed to screenshot it once I can probably find that if I need to. Essentally what happens is someone would message me, and when I type /r it instead directs my message to the second most previous person I was messaging, not the most recent. And it only happens when I switch servers.
Back when Yvy's name was still ItsYvy, or like ItsYvette I don't remember, I'd try to, for example, "/r i dont know what to say" and it would send it to Yvy. Hasn't happened in a while, but this bug definitely should be looked into