Falsely double click detected in widget when it is below another widget that disappears on clicked

The bug occurs when there exists a widget A that hides on click is on top of a widget B that responds to double click, where double clicking on A will trigger a double click on B as well.

The behavior was also observed for various other widgets such as combo box or dialog box. The same behavior was also observed in Qt Creator 4.7.0 when double clicking the cancel button of a dialog box that is directly on top of some text in the editor.

Attached is a QML example that illustrates the problem, where double clicking on RED will result in "RED clicked" and "WHITE double clicked" in the console, instead of "RED clicked" and "WHITE clicked".