[AccessD] No debugging possible???

Dear group,

I have a menu bar item that calls a user defined function to open a specific
form using docmd.openform "FormName".
Depending on the user group membership, it might not be possible for the
user to open that form.

If I set a breakpoint in the function for debugging purposes, that
breakpoint is ignored if the function is called by selection the menu bar
entry. However, if I call the function from the immediate window, it stops
at the breakpoint.

Is that normal behaviour or am I missing something here?

TIA,

Michael