When creating Drawing Views, in the Drawing and Sheet Model elements are highlighted or selected on the background even though those elements are not visible or part of the Drawing View.
[V8i screenshots also apply to CONNECT Edition to illustrate this case]
This is due to the fact that Visible Edges is set to "Dynamic" by default. If Visible Edges is set to "Cached" than the elements on the background would no longer highlight or be available for selection.