Chat history in a pickaxe shows for all users

I was logged in as my normal user and ran a pickaxe. Then I logged out and back in as my test user. Went to the same pickaxe and clicked on history and it pulled up the history of the session I just had with the other user account. I dont want all users to see the history of other sessions. How do I turn that off

It’s most likely because you’re using the same IP Address