#3875 / FormElement 'extra': Fehler bei neuen Records.
QFQ complains that the given SIP parameter is already defined. Problem is the pre filling of Store SIP, which normally happens only during form load. But the new 'saving a new record (r=0) and redirecting the browser to the same page with the new record id', requires a new SIP. That SIP is calculated before form-load and causes the exception. Fix: defined parameter in a store, which will be redefined with the same value, wont' throw an exception anymore. Store.php: compare old and new value and only if they differ throw an exception.