Is it a bug?

I just recently made Tetzle zoom in and out on the mouse cursor. I felt that was much more natural than always zooming in and out on the center of the play area.

While I was doing so, I noticed that the code implied that was how it was already supposed to work. But it didn’t. And yet… when I looked far enough back… it did! Back with Tetzle 2.0 I rewrote the graphics handling and broke the zooming in on the cursor. Unintentionally. Ever since then, it has zoomed in on the center of the play area.

So… does that make this a bugfix for a bug that was 13 years old? Or a reintroduction of a past feature? 😛