I have posted about this before. I have a Lumia 638 with the build 14376 installed. My apps including the Windows one are not filling the screen and being cut at bottom. When I open apps with this issue, even the app starting icon is slight down. This not filling the screen and being cut at bottom is resulting in Apps navigation bar cut at the bottom. I can't perform things. All I can do is scroll down and exit the app. What to do to fix it? I am really waiting for a working answer.