only set lastDue if card is not new, hide due for new cards in stats

anki/deck.py

@@ -348,6 +348,8 @@ where factId in (select factId from %s limit 60))""" % (new, new))
         if lastDelay >= 0:
             # keep last interval if reviewing early
             card.lastInterval = last
+        if card.reps:
+            # only update if card was not new
             card.lastDue = card.due
         card.due = self.nextDue(card, ease, oldState)
         card.isDue = 0

anki/stats.py

@@ -265,6 +265,7 @@ class CardStats(object):
         if c.firstAnswered:
             self.addLine(_("First Review"), self.strTime(c.firstAnswered))
         self.addLine(_("Changed"), self.strTime(c.modified))
+        if c.reps:
             next = time.time() - c.due
             if next > 0:
                 next = _("%s ago") % fmt(next)