This is the first time, I’m installing a Windows Phone Developer Preview version. Rest of the time, I always wait until the final version is pushed OTA. This time I’m little hungry because of “Cortana”. The iconic stuff that made we to break the wait and install the dev preview.
Last week, surprising, I encountered an unusual bug in the dev preview (thrice, if I could remember) and I call it as “Zoom Bug”. Ya, entire screens got zoomed somehow– start screen, app screen, multi-tasking screen and even the lock screen. Take a look for yourselves.
And, how did I zoom out of the device? I restarted the device! 
Thanks.