When rubber is created by the ArtiosCAD rubbering tool, the separators do not touch the rule.
This is the expected behavior.
The display of the rule on the screen does not show the rule pointage, but the offset for the rubber must account for it. Measuring the distance between the separator and the rule will show that it is one half of the rule pointage (1pt in this example). When the dieboard is produced, the resulting rubber will position properly against the rule.