Nets......I have 4 of these on knives that get carried on again / off again (Camper, Explorer, Ranger, Mountaineer Lite) and they all have the same exact gap as yours. I believe it is intentional to accommodate slight variations in scale thickness and does not affect the strength of the clip in any way. May even provide a little flexibility to the clip.
The SwissQlip has replaced the suspension clip for me (except for the Vagabond in my right rear pocket) because I now have 6 pairs of blue jeans with the top of the right front pocket shredded by the suspension clip going on and off. Good investment given the cost of blue jeans 😂.