Have you ever tested this by having someone other than you make an edit on a card you're watching?  Wagn doesn't notify you of your own edits, of course.  (Though that's actually gnabbed me when debugging at times).

Looking briefly at your recent changes, I don't see lots of changes by other people. 

If you're confident that's not it, can you give me an example of a recent edit that you would expect to trigger a notification?