undo buffer in reverse order?

[imonsei]

When doing quick align planes and pressing the "object" button, the resulting operations are not put on top of the blender undo buffer stack. I haven't tested on the other tools.
It looks like it is being put on the bottom of the undo buffer from the point of where you go into edit mode.
Steps to replicate:

1. Add 2 meshes to a scene
2. Move mesh 1 around a bit (for verification of undo buffer order)
3. Go into edit mode and grab destination vertices from mesh 1.
4. Go into edit mode of mesh 2 and select and deselect some vertices a bunch of times (for verification of undo buffer order)
5. While in edit mode of mesh 2, select 3 verticies and press the "object" button on the "Quick align planes" tool.
6. Start pressing Ctrl-z and see that the select and deselect vertices operations gets undone first (but not the moving of mesh 1 in the second step), and the "Quick align planes" operation gets undone last.