Yes, it happens every now and then. It's just a glitch in which the software that's putting together the page display for you fails to receive the number of views from the database in time, so it just plows ahead with the rest of the page display, and shows you a zero for any missing item. (I think details like view counts are regarded as minor details that are not worth holding up the rest of the page construction to obtain.) I've occasionally seen a My eBay page come up with half good data and half missing. It's not gone permanently; just try it again in a minute or two.
