drawQuery() method doesn't respect specified setlayersdrawingorder(array layeryindex)

[spoletto@…]

I am writing a web application using PHP-Mapscript 4.8.3 on a Linux Debian
(Sarge) machine.
On every refresh I set, with setlayersdrawingorder(), the user-customized
drawing order of the layers in the map file; but when there is a selection and I
draw the map with the drawQuery() method instead of draw() the order remains
always the predefined order in the map file, no matter of setlayersdrawingorder().
I think drawQuery() draws always the map with the predefined order in the map file.