if i have an image in a container with width set to a fixed value ( ie 128px ) and height set to auto, and i add an Image, with scaleMode set to ScaleMode.ScaleToFit, to that container I get the results shown in the image below.

i would imagine that the child image would scale to the container width that i have set at 128px and then, with the container height set as auto, the image would scale to width of 128 and height of 128 to fit in the container.