I think there are some spiders with wobbles and others without. I also Think that many people have put the wobble off as no big deal and therefore breed an animal with a wobble, I personally have a male breeder spider I acquired him
About 3 years ago from Snakemans Exotics and have bred him getting successful clutches 2x. Now first of all he has no wobble, not even a slight one. And never has. Secondly, I have 3 of his babies in my racks still, one spider female from 2 years ago and 1 normal male from last year, and a spider male from last year. All babies do not nor ever have had any wobble, not even the slightest. There are spiders out there without wobbles. My partner on some projects has 3 adult females their first year is this season that have no wobble. Babies from spider parents with wobbles have wobbles and that can go for spiders or non spiders. In my experience with breeding my spider anyways all of the babies he's had thus far have had no wobbles.