The thing is whilst I was always slim & have proportionately long legs, short torso is definitely a description that could be applied to me & I don't remember the rize being quiet as extreme as you're saying & the Argyll's kilt I had was for a bigger man as I had to belt it to stop it slipping from the above the knee position. I would have said the rise was to under rib cage level but.nowhere near covering my shirt pocket.

I did tend to go for wearing it with a waistcoat though and I did fold the shirt over and secured it with a belt if not wearing one so that could have played a part?