I have had a problem like this when printing to a PDF and my objects in paperspace are under my model space objects, there is an option when printing to check the box that says "print paperspace obejects last", try that at first to see if it helps with the order of objects. Also if you have selected all the items in paperspace and place them in the order as "bring to front" and that does not work then try the opposite and place the other objects as order of "send to back" then if that doesnt help then right click on the viewport and select draw order form there and send the viewport to back. If that doesnt help then not sure...