Audio in webView does not stop after exiting!

I have a in-app webView and run into a problem:

If the webpage has a youTube video playing and when I exit the webView, the UI is back to normal, but the audio is still playing in the background!

This does not happen in Corona Simulator. The audio stops.

But I test my app in a real device (Galaxy Tab), the audio problem shows up.

I am pretty sure I remove the webView when the scene exits, please see the code below:

local storyboard = require( "storyboard" ) local scene = storyboard.newScene() local webView function scene:createScene( event ) local group = self.view local url = event.params.theURL webView = native.newWebView(0, 0, display.viewableContentWidth, display.viewableContentHeight ) webView:request(url) group:insert(webView) end function scene:enterScene( event ) local group = self.view end function scene:exitScene( event ) local group = self.view webView:removeSelf() webView = nil end function scene:destroyScene( event ) local group = self.view end scene:addEventListener( "createScene", scene ) scene:addEventListener( "enterScene", scene ) scene:addEventListener( "exitScene", scene ) scene:addEventListener( "destroyScene", scene ) return scene

I use this scene as a overlay scene. I exit this scene by 

storyboard.hideOverlay( "fade", 400 )

Anything wrong with my code?

Or a bug in Corona?

Where can I report Corona bugs?

Link in the top bar: http://developer.coronalabs.com/content/bug-submission

Where can I report Corona bugs?

Link in the top bar: http://developer.coronalabs.com/content/bug-submission