Missionaries not buttoning their suits
This is 100% one of the most meaningless posts I've ever made and it's purely anecdotal. But, I've noticed that missionaries don't seem to button their suits. Once you see it, you can't unsee it. If you look up LDS missionaries in suits on Google images, none of them button their suits.
Why is this so widespread? Understandable for missionaries who didn't wear suits before their missions, but, with how standard suits are at church, what's up with that?