LT3045 - PG functionnality in LTSPICE


I have remarked that when modifying the spice model example given in the analog website for the device that the PG pin seems to have a weird behaviour. 

When I connect the Enable pin to an external pulse source, in order to enable and disable several times the device, I remark that the PG nevers pulls low when the LDO is OFF (En voltage high). It will only pull low for a short time, when the output voltage rises again from zero to is PG treshold voltage. 

Is that behaviour normal and will also happen in real live ?