server/AyaNova/biz/MemoBiz.cs

@@ -75,6 +75,8 @@ namespace AyaNova.Biz
                 if (!ret.Viewed)
                 {
                     //FLAG VIEWED
+                    //refetch with tracking
+                    ret = await ct.Memo.SingleOrDefaultAsync(m => m.Id == id && m.ToId == UserId);
                     ret.Viewed = true;
                     await ct.SaveChangesAsync();
                 }