Half of the screen becomes black

[yasdar]

Hi,

Half of the screen becomes black when I play your game on Chrome in Android

in order to have a yellow background for the entire game, in the boot state I'm using :

 

preload: function(){

 

 this.game.stage.backgroundColor  = 0xFFFFCC;

.

.

}

 

but result show half screen yellow+half screen black.

and

any solution ?, what is the cause ?

Thank you