Android Question Spinner not responding to colordrawable

ToolboxZX

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In what instance would a spinner not respond to a ColorDrawable?

Consider the following code where a spinner "MySpinner" exists:
B4X:
Dim cdw as Color Drawable
cdw.Initialize2 (Colors.Transparent, 10,3,Colors.Red)
MySpinner.Background = cdw

Adding this code on 3 devices produces the desired result. A transparent background with a red border around the spinner. But on a Samsung GalaxyTab A it appears to ignore it completely. Android version is 6.0.1

Is there a method for achieving the desired results?
 
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