Just switched to 2.7

Simple problem: When I press a number to go into side/top/front view, then I rotate out of it with the middle mouse button, it resets the view to perspective. Is this a glitch or a purposefully implemented, if so, is there any way to disable it? As I prefer to work in orthographic. Thanks for any help.

In user preferences under Interface unselect Auto Perspective

Simple problem, simple solution. Thank you very much.