Visibility of QQuickWidget with hidden QWidget surface on Android

Given: QQuickWidget container shown on top of a QWidget surface.

Problem: When the QWidget container is set to be hidden, it actually occludes the QQuickWidget surface.

Note: When pressing the Android home button and returning to the app, the surface order goes back to normal, meaning that the QQuickWidget surface is shown properly for being the single visible item.

See test case attached:

• For VISIBILITY_BUG = 1, the QWidget surface is hidden, and the bug appears.
• For VISIBILITY = 0, the QWidget surface is not hidden and everything is fine.
• See also more detailed test case description with screen shots: http://open-terrain.org/index.php/Pong/October20th2014Qt54BetaTesting