Marker in not updating its position on the map, when its value is updated

I am using `ui-leaflet` in Cordova mobile app.
I have a simple marker, initially shown on the map. However, when I change either marker's `lat` or `lng`, this is not shown on the map.
In case of user action on the map, however e.g. touch, click, drag, the marker position on the map updates properly.