Updating coordinate of image source doesn't have effect in mapboxgl

Recently a new mapboxgl image source added (https://codereview.qt-project.org/c/qt/qtlocation/+/278279) however, when updating coordinate nothing happen to displayed image,

Also setting source parameter for displaying layer (line 50, commented) will throw an mbgl exception informing that a layer already exists, it seems that every update in a layer will cause adding a new layer to mbgl and by not removing old one, mbgl informs about duplicate layer id