It's possible to sell more copies of a game than your console unit has sold

Game Dev Tycoon bug
#21

When I sold 5 millions of my console and sell an exclusive game in the first week with 10 million copies, it is a logic bug.
When I sell 3 Millions and in the next month/s more then 5 millions it is a possibility.

Further it is not really logical to have a market share for your console of over 30% and all other platforms with around 10-11% and sell a multiplatformer with 10 times (and more) higher the market share (amount of available systems) of all 3 platforms together.
This is a balance bug, you can gain way more income with this.

#22

As an addition:

If you say a broken datamedium animates to buy another copy you need to mirror this on the consoles also.
So the sold amount of consoles is not the number of used ones.
In this case the amount of sold exclusive games is not only 5+ times higher.