That isn't really a solution as much as it is a work around. What you are looking for is "showallinvp"

I developed this handly little shortcut to detect which space I am issuing the command from so I don't have to think about it....

(defun C:SA () ;Showall
  (if (= (vla-get-ActiveSpace(vla-get-activedocument(vlax-get-acad-object))) 0)
    (command "SHOWALLINVP")
    (command "SHOWALL")
    )  
  )