Doesn't sync fullscreen

[CDormehl]

When setting the size of the content, I can't make it display any larger that 1920x1080. I've tried fullscreen in the config.xml, I've tried getting the screen size and using what I get but I can't make the content stretch over the entire screen.

let resolutionWidth;
let resolutionHeight;

function getDisplaySize() {
    console.log("--> Get Display Size");
    // Check the screen width so that the AVPlay can be scaled accordingly
    tizen.systeminfo.getPropertyValue(
        'DISPLAY',
        function successHandler(data) {
            console.log("Display Size Data: ", data, " data String: ", JSON.stringify(data))
            resolutionWidth = data.resolutionWidth;
            resolutionHeight = data.resolutionHeight;
            // updatePlayerCoords(resolutionHeight, resolutionWidth);
            // initialize(config.url);
        },
        function errorHandler() {
            resolutionWidth = window.innerWidth;
            resolutionHeight = window.innerHeight;
            initialize(config.url);
        }
    );
}

startSyncPlay: function() {
			
			var start = null;
			var syncinfo = {
			   "rectX"     : 0,
			   "rectY"	   : 0,
			   "rectWidth" : resolutionWidth,
			   "rectHeight": resolutionHeight,
			   "groupID"   : 5,
			   "rotate"    : "OFF"
			};
			var onlistener = function(data) {
			    console.log("[start]data:" + data + "changed");
			};
			
			try {			
			    start = webapis.syncplay.start(syncinfo,onlistener);
			} catch (e) {		
			    console.log("[start] call syncFunction exception [" + e.code + "] name: " + e.name + " message: " + e.message);
			}
		},