It's not a bug, it's a feature!

For $49.99 extra, they'll include an extra little inertial motor inside each die that connects to your app and makes sure it lands on the number you want.

As someone who is extremely unlucky with dice and bought balanced ones for a ton of money, if someone told me I had to use these, I would just leave.

(The balanced dice actually works for me)

For Pixels, at least, a great deal of effort went in to making them perfectly balanced.