Before contacting "Customers Service" or reset the Kindle,
I noticed something strange to me when I open the Kindle icon onPC in My Computer.
First time appears a shortcut of 2K to kindle . After I click on the shortcut, the contents opens in another window. This is normal? Two screenshots below.

I hope I remember well. Before, this shortcut not appear and the content opened in the same window...
p.s. Firware version is 5.3.2.1