Could you post a picture to understand exactly your issue? I don’t see exactly what you mean...
I’m using a mag wallet since the first version... working great, no problem with it...
In your case, putting it in the rear pocket is not a very good ideal because the aramid is not done to be bend, so maybe, when you sit, say after day, one layer can gone away because of bend force when you sit.
With a picture, we will see better.
Let’s people of Pitaka answer you.