Incorrect Axis Movement

I have encountered a problem with LinuxCNC/AXIS.

I am using LinuxCNC/AXIS version 2.7.15 on debian 9 stretch. My installation is for a 4 axis Sherline machine. I have been using this machine for several months without issues. After installing all upgrades and updates, my X AXIS still moves incorrectly.
The movement at line 3 works correctly while the movement at line 7 does not. It runs to about 0.27 and then skips to the next line
which is go to zero.

If I step through the code line by line it works correctly, but when in full run mode is does not.

Any ideas?

%
Line1 g1 x0 y0 f24
Line2 g1 y-0.01 f1
Line3 g1 x-0.375 f0.5
Line4 g1 x0 y0 f24
Line5
Line6 g1 y-0.015 f1
Line7 g1 x-0.375 f0.5
Line8 g1 x0 y0 f24
%

Try adding
G64 P0.01 Q0.01
as the first line.

That did work. G64 seems to be of strange command. I use G2 and G3 commands a lot so it appears that is not for every where. I need to study that command.

Thanks for the tip