UI problem in Android buildin browser

Hi, I found there’s some UI problem in Android Buildin Browser
The video file was grey when I open it in buildin browser, I cannot click the center of the video in order to play.
I need to click the bottom-left small box to play video.
Most visitors don’t know this tricky part and said “I can’t play the video”

http://i117.photobucket.com/albums/o52/Enterprise_a/videojs_android_buildin.png

But there’s no problem in Android Chrome browser

http://i117.photobucket.com/albums/o52/Enterprise_a/videojs_android_chrome.png

http://wordpress.org/plugins/videojs-html5-video-player-for-wordpress/