I can confirm it's happening to me with Chrome. I thought it was a Chrome thing because I just recently started using it as my main browser.
I'd say let's just deal with it for now as it's only being a nuisance and not a true security risk. We can try to implement that mod after the LAN.
Edit: As a workaround for the time being, you could always change your display name slightly, as I have here. That should buy you some time.