Your post appears well documented but has not yet received any response. I am replying to raise awareness. Hopefully, another community member will be able to help.
Also, feel free to add any additional information you think might be relevant.
The default setting to create those lines is available for "Add symmetry and centerlines to standard views during view update." => see settings browser.
a) afterwards it can be enabled / disabled per view. (-> view properties)
b) it also depends on the view-profile which was used when creating the view / or applied to later on.
BTW 1..2E-1 mm is a rather poor resolution for a system used to use 1E-6 mm. But it the section is defined correctly (center of hole, perpendicular) it should work as well.