I would contact Apppresser and see if they have any ideas. It's probably got something to do with the styling on your site, but I can't say for sure without knowing more. See Asking Better Questions (PhoneGap Forum) for information that would be helpful.
setting up height of the iframe in pixels instead of % will solve this issue but its not a perfect solution, we need 100% height for every page on website.
I guess, Android won't support for iframe height in %,
For modern Android devices, you should be able to apply a "height: 100vh" rule. See http://caniuse.com/#search=viewport for support. You might consider the Crosswalk plugin if you need Android devices between 4.1 and 4.4.