Retract no longer works after a while.

Hello,
Something is wrong. If Qtdragon is running for a while, the retract function does not work for Z measurement or tool measurement. Z simply remains on the button in the triggered state. If Linuxcnc is restarted, it works again for a short while. Maybe there is a connection to the program length of the program being processed, approx. >50,000 steps. Qtdragon also feels a bit slow. BS and Linux CNC Version: 2.10.0-pre0-3685-gcbfe160071 up to date. I noticed the effect with the last version, but I suspected my wiring, but that was not confirmed.

Best regards, Frank.   

Could you post a sample long program to test with?

Hello,

no problem, I'm attaching it as a zip file.
It's not that long but this is where the problem occurred last.
I have another problem right now but I'm starting a new topic for it.

Sorry for my google English
Thank you for your efforts.
Kind regards, Frank.