Background.requestApplicationWake no reaction on Venu

I have written a small widget type app that fetches some data from an api and displays data.

My latest addition is to fetch data in the background and if the data is above a certain threshold.

This all seems to work, even the backgroud process (logging that it gets the values etc.)

But it seems the: Background.requestApplicationWake("value is high, show widget?") does nothing, no dialog, no exception in the log, nothing.

I thought I could call this in the background to ask the user to open the widget/app again.

I am testing on a physical Venu watch, and in the simulator as well.

My BackgroundDeviceTransactionDelegate calls the restoreFromBackground function, but nothing seems to happen.

// https://forums.garmin.com/developer/connect-iq/f/discussion/252923/requestapplicationwake-in-onrecive
(:background)
class BackgroundTimerServiceDelegate extends System.ServiceDelegate {
	var _transaction;

    function initialize() {
        ServiceDelegate.initialize();
    }

    function onTemporalEvent() {
    	fetchData();
    }
    
    function fetchData() {
        var deviceId = App.getApp().getProperty("device");
    	if(deviceId != null){
    		var backgroundDeviceTransactionDelegate = new BackgroundDeviceTransactionDelegate(self);			   		
    		_transaction = new BackgroundDeviceTransaction( 
            	backgroundDeviceTransactionDelegate,
            	deviceId
        	);
        	_transaction.go();
    	}
    }
    
    function restoreFromBackground(){
    	Background.requestApplicationWake("value is high, show widget?");  
        Background.exit(null);    
    }
}

My main app looks like this:

using Toybox.Application;
using Toybox.WatchUi as Ui;
using Toybox.Application as App;

(:background)
class MyApp extends Application.AppBase {

    function initialize() {
        AppBase.initialize();
    }

    function onStart(state) {
    }
    

    function onStop(state) {
        System.println("onStop");
    }

    function getInitialView() {
        if(!System.getDeviceSettings().phoneConnected) {
            return [new ErrorView("Connect to phone") ];
        } else {
        	// Register for background events:
     		Background.registerForTemporalEvent(new Time.Duration(5 * 60)); 
            return [ new DeviceView(), new ResetAndSelectOnTapInputDelegate() ];
        }
    }
    
    function onSettingsChanged() {
        Ui.requestUpdate();
    }
    
    function getServiceDelegate(){
        return [new BackgroundTimerServiceDelegate()];
    }
    
}