Overlay ads are not displaying on swf video player and are displaying on html5 player

I have created a video player and enable VAST feature.
Then created a cuepoint overlay ad (VAST) for a video. The overlay ad is getting displayed on html5 video player properly but the same thing when we test on IE7 with swf video player the overlay ad is not getting displayed.

Is there any thing I need to to enable for overlay ads to be displayed on swf player.
Version: Kaltura CE 11.11.0

Kindly let us know.