How does rotation work?

Where is the center of rotation? The center of the sprite? Because it doesn’t seem that way to me.

Hmm i remade the object and pasted all the exact code into it and for some reason the rotation axis of the first object was different. Don’t know why but ill just use the new object

It’s the center of the hitbox.
If you move the pixels and nothing else in the sprite editor, the hitbox will move too.
Too see the hitbox of objects in the game editor, you can actually press Ctrl + D.
(It will also try to bookmark the page, just unbookmark it and you can see the hitbox of all the objects)

Interesting, thanks!