Ibid sometimes showing page numbers sometimes not

Using a slighlty modified version of chicago 16th footnotes. When I do two books or articles in a row I can add page numbers to ibid and they appear, but when I cite a magazine article twice in a row page numbers don’t show up when added to ibid. Anyone know why/how to change this? 

Thanks

not without your slightly modified version of the output style being attached to play with.  You will need to zip it up to attach. The silly forum providers don’t let you attach most file types that are relevant to the forum topic.