EckyThump

Is this still a thing? I've definitely noticed Cura doesn't honour the hardware Z offset once, say, a purge line has been printed via Start gcode. If I remove the whole Start gcode, the hardware Z offset is honoured; re-add the purge line Start gcode and the rest of the print starts noticeably higher (I compare a rough non-Start gcode calibration pattern with a rough calibration pattern with Start gcode, and the former pattern is clearly rougher because of the lower Z height). Is there a fix that can be applied to the end of the Start gcode to overcome this oddity?