>Recently, I started a thread as to know what makes the ESC closes the form. I've been searching my framework and there is nothing in there that has been done to do that. We don't have any button on the form, no ON ESCAPE and nothing in the KeyPress() event. What I think is that the recent version of VFP could make that a default when that key is pressed to close the form. Could that be it? If yes, does that make sense that it is not applicable to modal form?

If you still haven't found it. What I usally do is run the form and in the debugger I put a stop on program() then hit escape. It should stop on the on key or thisform.release(). Also you could put a break point on _screen.FormCount to see when it changes.