Solution 3: "rotating after" realizing
Since the other proposed solutions don't seem to work:
- Solution 1: simplest, doesn't rotate "after" realize.
- Solution 2: might behave different in different Blender versions
This solution uses named attributes instead.
Solution file:
There are two objects, one with each solution presented below.
Old solution 1
Anything against making the meshes before instancing?
Old solution 2
If you really need to set it after (I see no reason, but you might have more complex cases), you need to set the center of the rotation.