See here: http://screencast.com/t/Wez5lPu6l0 This happens in master and 3.6.3+ When you are adding multiple items in a basket it does not update the quantity properly. In my video it stopped at 3 even though I added 5 - I've also seen it stop at 2 in the past.
Hi Nicole, is this perhaps a duplicate to bug 7239?
Doesn't sound the same, but it does seem that I don't have a problem editing the qty anymore. *** This bug has been marked as a duplicate of bug 7239 ***