More on Not Eating Gebrokts

From

https://goo.gl/26LwUE

Interestingly, one posek even voiced opposition to the minhag, arguing that the limitations imposed by its adherence would place unnecessary limitations on Pesach menus, thereby diminishing the enjoyment of the Yom Tov.

It is important to note that even those who keep this custom are careful to emphasize that it is only a stringency, and not a halachically-mandated requirement. For this reason, Hasidim and others following this minhag often partake of gebrokts on the eighth day of Pesach*, so as to symbolically join their brethren who have not adopted the chumra.

Pretty much all of them, at least in chu"l, since they davka do eat it on the last day, even though all the strictures against chomets are still in place.