Dimensions of subreports



I am working with Live Cycle ES 8.2, and when I re-measure with the mouse the subreports, habitually it changes both the measures and the position of the same one.

Example: the configuration of the drawning aids is in centimeters, interval 10/cm and snap to grid to true.

If my subreport has the following measures and position:

x: 1 cm

y: 13.1 cm

Width: 19 cm

Height: 11.2

When with the mouse I re-measure the subform 0.1 cm less, the result is the following one:

x: 0.9936 cm

y: 13.101 cm

Width: 19.0032 cm

Height: 11.099 cm why does not respect the values?