Hi,
When I open postman, it may happen than my environment is not the latest i used.
It my also happen randomly on opening a collection or minimizing/maximizing the postman window.
This behavior may be dangerous.
We’re on 11.50.6.
Thanks
Hey @jpw 
Welcome to the Postman Community! 
Are you using the pinned environments feature? This will auto select a default environment for the Collection if you are using it.
Are you able to share screenshots or a video of the behaviour you’re seeing?