Video won't go fullscreen without Crosswalk

I’m using vzaar video host to implement a video using iframe tag in my Android mobile app built with Ionic framework.

Everything works fine except fullscreen option. Video doesn’t go fullscreen when I press the fullscreen button in the vzaar player. When I play vzaar video in Chrome on Android, fullscreen works properly. Then I installed Crosswalk plugin, rebuild the app and the fullscreen was working fine, but the file size increased from 3MB to 25MB.

Without Crosswalk fullscreen doen’t work on Android 4.4, but it does on Android 5.0.

Is there any solution to this problem without using Crosswalk plugin?