Center line changing in thickness

So,

we use 0,25 line width group, which is 0,25 for thick and 0,13 for thin ones.

Views added via wizard or manualy show correct line width.

But once I try to edit any centerline it changes to 0,35 mm. Why? How to prevent this?

Its not much of a trouble (to change it back to 0,13) since I am already in edit menu, but still anoying.

Thank You.