Order of environment variables changes

Postman 6.7.4

In my environments, I maintain a list of identical variable names with different values, so I can easily switch from one to another. The trouble is, when I activate one and disable another, then send a message, I go back to the variables and the order of the list has changed. I see no rhyme or reason to the change, and it is frustrating to have to scan through the list each time to find the one I want.

Is there a way to stop this? I can find no obviously relevant setting, and a search found no mention of this in the forums.