Bug: Weird warning when adding a Layer

Reference thread:

https://forums.garmin.com/developer/connect-iq/f/discussion/301701/struggling-a-bit-with-views-and-how-stuff-gets-on-the-screen/1460947#1460947

// lines 106-110 in source/AnimationWatchFaceView.mc

        _drawLayer = new WatchUi.Layer({
            :locX=>_drawLayerArea[0],
            :locY=>_drawLayerArea[1],
            :width=>_drawLayerArea[2],
            :height=>_drawLayerArea[3]});
            
// My code
    var layer = new Ui.Layer({
      :locX       => 140,
      :locY       => 140,
      :width      => 140,
      :height     => 140,
      :visibility => true,
    });

The code emits a warning:

WARNING: fenix6xpro: /home/ciq/src/source/views/OverlayView.mc:30: Unable to detect scope for the symbol reference 'width'.
WARNING: fenix6xpro: /home/ciq/src/source/views/OverlayView.mc:30: Unable to detect scope for the symbol reference 'height'.

Funny enough it does seem to work as advertised, because I can set the height and width correctly.

Full code is available at https://gitlab.com/waterkip/ciq-demo-watch-app/-/blob/overlay-view/source/views/OverlayView.mc