For some reason, I cannot get edrawings 2017 to allow Pan, Zoom, Rotate on Surface Pro 4 in Tablet Mode.  I have the app on my iphone and can manipulate the same assembly file anyway I want with my finger.  For whatever reason it's unresponsive on my surface pro unless I have it out of tablet mode and use a mouse or the track pad.  Any idea why this is?  I've searched for a couple hours online but haven't found an answer.