Double PM

Any time I PM anyone on any table, My Computer seems to send it twice. And sometimes an incoming PM is repeated. I've done it on a lot of tables and it seems to happen 1/2 of the time when I send it, and 1/4 of the time when the other person sends it.
My browser version is: (do not change)
Chrome/62.0.3202.82

Just a quirk of how Frost has coded things from what I can work out

The first PM is the message sending from your computer and being added to the chat log. The 2nd PM is the message being received by the other player, when it is again added to the chat log.

ok, thank you