It is correct.
There is a nice feature for v9 Post-V8 New Features and Development News - #62 by Drinausaur
It showns this a bit clearer. It’s basically creepage (surface around slots) and clearance (through air)
In your 2nd shot the track has been moved so there isnt a straight line path to the other track and thus the creepage distance has (hopefully) been increased enough to pass your 6mm constraints