Just something to add to the other reasons, is when the weather starts to get cooler and the days get shorter Deer get serious about eating. The longer the nights the longer they browse and graze, it is more a quantity thing than a quality thing. Nature telling them to eat as much as possible and pack on as much fat as possible for the rut and winter.

Your Corn may not be as interesting as say 30-40 lbs. of good forage.

You don't have any Badgers around do you? They can get protective about feeders and claim them. And tend to fight off all comers. I watched a Mother Badger with two almost grown pups back down a Sounder of around 8 Hogs. It looked like the Hogs had a go around with Badgers before and wanted nothing to do with them.

Maybe the Yotes or even a Cougar or Bear has been leaving sign (marking) around there. You won't find many Deer around one of those spots at the boundaries of a Yote pack borderline, you just find signs of the scat wars, where the Yote pack with the most poop wins.