Contour receiver - PIP

I have tried the PIP selection on the remote nothing happens so I assume this feature finished when I upgraded to the Contour model. I have one slave box.  However =it has popped up  on a couple of occasions requiring hard reboot of the receiver to get it to go away.

Phone tech's cannot answer the question.  Mine is simple - Why doesn't the Contour system have a working PIP?  This feature has been around for years and since it does pop in (for whatever reason) tells me the box has the capability but is at issue because of the remote Cox uses.  Could that be true?!?

Anyone with further info please reply