Second of two buttons has very blurry label when both buttons have a reflection

I put two buttons in a VBox and applied a reflection to each. The label on the second button is much blurrier than the label on the first button. This only occurs if the reflection is applied to both buttons in a VBox. If only applied to one button, or if placed in an HBox rather than a VBox, the labels are similar. Test app and screen shot are attached.