Hello, I wonder if I select e.g. two objects and then press G, R, S then the change is for both selected. But when I want to use any of Transform entries: Location, Rotation, Scale or Dimension then transformed is only last selected.
So your question is why edits to the transformation in panels are applied to the active object only?
It’s intentional, context matters in Blender a lot. Everything in the properties editor refers to a single object, may it be the current scene, active objects or whatever. The UI can’t (yet) handle group-wise editing of (common) properties. Operators (G, R, S, …) can however, they usually act on all selected objects.
I understand, I have similar problem at my http://msDrop.com system. With mouse dragging I can move selected elements (as many I want), and system save positions of every. With contextual menu entry I can set position of any element (separatelly), but I can not do the same to selection for relative elements positioning.