I've seen the same with embroidery feet. On the Pfaff 2170, they hop.The newer Creative line, they snap on like ordinary feet.
I borrowed newer foot and it worked on the 2170, but the size of the foot and where it came close to the hoop was the problem. No difference in Embroidery.

I think the only feet that need to use the needle bar are walking and rufflers. On machines with even feed feet, those built in feet don't hop - you use regular feet - at least the Pfaff does.

I modified a foot a la Leah Day - it does work except I had the wrong size rubber band.