Mario kart pc messaging glitch!

So a while ago i had a glitch happen! And it just happened again!
(if you didn't know, if you search your username in the "all my conversations" you can message yourself! and if you have 2 tabs open you get notified that *your username here*
has sent you a message) but this is only part of the glitch i am talking about...
Here is what happens...

1. I have 2 MKPC tabs open...
2. I message someone...
3. I get notified from the other tab saying that the person I just messaged has sent me a message... But uh... ITS WHAT I HAD JUST SAID TO THEM! its wierd

First time i hear something like this

I think i know what its doing... but i dont know why...
In the other MKPC tab (the one i am not using) it opens my chat window (like when i search my name in the "all my conversations" ) but MKPC thinks its the person that i was just messaging and applies their name to it.
I am getting notified because it thinks i am messaging myself! But i am not messaging myself...

so it working now or still grinch.

so it working now or still grinch.

In the past, it was impossible to message yourself but Wargor later made an update that allowed you to do this because some people like messaging themselves to save things... But this obviously creates a few weird but small glitches because it's normally impossible xD