Why does hitting the escape key not stop an nc subroutine?

I've got this subroutine to surface the table, invoke from a button in the VCP. Hitting escape does not abort this program, even though it aborts regular loaded programs. The stop button does seem to stop it.

This strikes me as dangerous. Is there some way to get escape to work in all situations?

Ah. It happens when you end your while loop with "end while' and not "endwhile"