Fresh corn is so iffy here in the Boston area, that almost everyone in supermarkets pulls back the husks to some degree.
Sometimes, the market will put a big trash can next to the corn, condoning the shuck.
Other times, the SAME market will post a sign, "Please do not shuck corn".
Weird.
Doesn't make much difference either way, because at the market I go to in the center of town, many of the customers either cannot read English, or they can, but pretend not to.
I buy my corn at roadside stands or farms in August. There, they just toss the ears that THEY pick out into your bag and send you to checkout. Never have to worry about a bad ear.
Lee