System Information
NA
Blender Version
Blender 2.78
Short description of error
Snap Element dialog does not match Mesh Select Mode dialog and does not work as expected.
Exact steps for others to reproduce the error
In a new scene, enter edit mode on the cube with Tab
Use Ctrl+Tab followed by 1 to select the Mesh Select Mode for vertex select. (First option on list)
Set snapping to vertex snap by pressing Shift+Ctrl+Tab followed by 1 and it selects increment mode instead since it is the first option on the list.
Solution:
Change Increment mode to be the 4th or 5th option on the list to retain the vertex, edge, face order that is in the Mesh Select Mode.