Hello WP fans! I installed the win 10 preview on my 640XL DS and it runs great, but i have an annoying bug. I wonder if anyone else has it. When i type something the keyboard frequently crashes. It disappears and doesn't come back up when i tap on a text area i should be able to type in. Sometimes it closes and the phone freezes and reboots itself. Yes i've tried a soft and a hard reset, without luck. Has somebody encountered this bug? I've reported it to Microsoft. Running on 8.1 till this gets fixed.