Cannot programmatically set/toggle fullscreen mode

@triniwiz/nativescript-youtubeplayer 4.1.4

On my button tap I call 'play' followed by 'toggleFullScreen'. The video plays but does not go full screen (both platforms). I tried delaying the 'toggleFullScreen' with a timer but that did not help...

                <YoutubePlayer ref="videoPlayer" showRelatedVideos="false" showYoutubeLogo="false"
                    :videoId="videoSource"
                    @currentTime="onCurrentTimeChange"
                    @stateChange="onStateChange" />

...
onPlayVideoTap() // my button tap
{
let player = this.$refs.videoPlayer.nativeView;
let _this = this;

            player.play();
            // attempt to make fullscreen
            player.toggleFullScreen();
        },

Start from the YoutubePlayer nativeView entry points used by play() and toggleFullScreen() and trace their behavior on both platforms. Reproduce the button-tap sequence, then verify that toggling fullscreen after play works consistently on both platforms.