If i have 10 jobs with a shared environment variable, i cant simply remove that one by selecting all 10 jobs, go to edit job properties and removing the one variable i don’t want.
It seems like it will pick a random job and set the environment variables of that onto ALL 10 jobs selected.
I just found this out the hard way, but not with 10 jobs, but 597 
That sounds brutal
We should probably change the behaviour of our list-type properties when multiple Jobs are selected to be a little more smart, or at the very least make it clear to the user how the change will be applied.
I’ll log a ticket for it
Thanks Jon, it was not a happy time 
I guess i should have tested this, but all the other settings are applied selectively.