Game doesn't shuffle deck right

So hi.. a few months back I downloaded the March 2021 version and was playing and started noticing odd things in my deck when playing the Magic.exe version in decks against AI opponent's. The AI shuffles their deck's fine, with real shuffling. Were as my deck is shuffled half-arsed. Like after it's shuffled and I use debug to look at it. It'll have like card AAA, CCC, 20 lands in a row, FFF, GGG.. and things like that. No real shuffling like you'd expect a shuffled deck to be. Makes it really hard to play or enjoy when you cant do things half the time cause the deck cant be shuffled right. I've even tried using shuffle cards like Demonic Tutor and they did nothing to fix it. In fact, it showed the animation but didnt shuffle at all.
So, is this some kind of bug.. or just something that happens? Is there some way to fix it? Or, is just to sucks but thats just how it is?
So, is this some kind of bug.. or just something that happens? Is there some way to fix it? Or, is just to sucks but thats just how it is?