Why does my while loop freeze when I click and hold on front panel controls

[JIM80]

This is a problem that has only just started as I have had the application working for over a year. I can also not get around the problem as I require an actuator to move while a button is held down, also the problem is not sorted in either LV 7 or in runtime

[pawel]

Hi
If you could send an example code, how it is done, maybe somebody will help.
Pawel