Strange Bar Overlayed on Flex Interface

When I set my Flex application to run in FullScreen_Interactive, as soon as I click on a control this bar appears along the bottom of the screen. It's quit开发者_开发知识库e obtrusive and has shown up on two different computers so far.

There's a lot of solid white underneath it and it covers at least 5-10% of the bottom of the screen, it blocks the controls also. I obviously never made/placed this thing, has anyone else come across this?

APPEND:

protected function windowedapplication1_applicationActivateHandler(event:AIREvent):void
        {
            stage.displayState = StageDisplayState.FULL_SCREEN_INTERACTIVE;
            stage.addEventListener(KeyboardEvent.KEY_DOWN, stopesc);

            //Scale to resolution size
            var thisScreen:Screen = Screen.mainScreen;
            var newScaleX:Number = thisScreen.visibleBounds.width / 1019 * 0.98;
            var newScaleY:Number = thisScreen.visibleBounds.height / 680 * 0.98;
            var newScale:Number = Math.min(newScaleX,newScaleY,1.5);
            this.scaleX = newScale;
            this.scaleY = newScale;
            this.height = this.height * newScale;
            this.width = this.width * newScale;
            showStatusBar="false"

        }

Try setting

showStatusBar="false"

in the WindowedApplication.