Any chance one leg is 1/4" longer than the other?
I do this sometimes and one leg is longer than the other. I think, for me though, it is just my dominant side is stronger than the other / I wrap one side better unintentionally. I say side and not leg as the squat is a whole body movement, bracing the abs, quads, hamstrings, glutes, etc, so I don't know what muscle, if any, is the cause.
I will also say that with normal training and time it goes away.