I am trying to change the Background color of the SfNumericUpDown control by binding this property to a string property in my viewmodel. I am using a simple converter that returns a color if the string property is empty and another color if it is not empty (it is part of my validation system). In the android app it works as expected. Only in the uwp app the background color dosn't change. With SfComboBox it works perfectly only the SfNumericUpDown fails.