Found out that the cycle G83 and G73 does not work correctly after the first coordinate.
First drilling point: from "initial Z hight" to "R" - rapid movement, then f100 feed to "Z depth of cycle".
all following points: f100 feed from "initial Z hight" to "Z depth of cycle" - R is ignored!
The error can be seen immediately by the color of the path in the window.
Version 1.2113.
It is also similar to the G89 cycle error that I found earlier.
http://cncdrive.com/forum/viewtopic.php?f=3&t=3045