MacPro dualXeon, ATI HD 5870, OSX 10.8.5
Applying rotation issue
Try this blend file, it demonstrates the issue.
Here's a request, it sounds rather as a feature but can be considered as a major bug.
Have two or three cubes on a plane. Add a second plane on top (to be the active for baking).
Try for normal maps.
OK. (I mean, bevel these cubes to have something to see on a nmap LOL)
Now, rotate these cubes a bit, select all, the last is the active plane on the top. Bake…
Wrong? because you did not apply rotation on objects first!
It goes worse now.
Use an empty and rotate the object by this empty.
Wrong baking again.
This isn't right. We shouldn't have to apply rotations and scale and etc. In fact we should avoid it in most cases.
An object has its own coordinates and we have to respect this.
By example, bake a nice object space normal map, apply it to the object, rotate the object. All fine. Apply rotation and the OS nmap is useless. (same when rotating in edit mode)