Suddenly, for some reason, objects in the unity editor started rotating around their center of gravity (at least that's what I think is going on) instead of their pivot point. I tried placing the object inside an empty object which would serve as the new pivot point, like usual, but this did not change anything. Is this some setting or some updated feature? How can I stop it?
This could be related to the 4.1, 4.2 and 4.3 updates when they added 2D support.
Objects can be defaulted to an average pivot point of itself and child objects instead of the specific pivot of the item selected. There is a setting you can change on the toolbar to show you which pivot you currently have displayed.
This affects what the pivot point is for all transforms within the editor: