Setting transparent pixmap to palette brush is effecting the use of palette on other widgets.

When palette brush is set to pixmap in the Background role of MainWindow and a palette is set for other widgets and whenever you try to access(click in case of push button) / update the widget, it redraws the portion of the updated area thus making the widget showing in different shades of color.

Screen snapshots have been attached showing behavior of the palette. PaletteBrush1 shows how the app looks like initially and PaletteBrush2 shows how it is after some operations.