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

[angel1st]

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.