Cupcakes Remove their Own Papers?

Yes, nudist cupcakes. Some people never experience this phenomenon, and I hadn’t until very recently when baking a large batch (16 dozen) cupcakes for a massive order at work. All was going according to plan, little cakes marching out of the oven left and right, but then while they sat on the counter cooling, they began to spontaneously undress. After having this happen a couple times on giant batches, I’ve come to find that there are two issues that could be the culprit here; most likely, the cupcakes are placed too close together while cooling, thus “steaming” each other and causing too much moisture to form between the cake and wrapper. Being paper, it doesn’t take much for the wrapper to give up the fight and fall off.