TabView currentIndex bound to c++ q_property inited not to zero -> content of currentTab drawn to high

When binding the currentIndex property of a TabView to a C++ Q_PROPERTY, and initializing this Q_PROPERTY to eg, 1 (so not the first, but second tab is selected), the content of the selected tab is drawn to high (it anchors the top of the tab contents to the top of the tab label, while it should be anchored to the bottom of the label).
In attachment the files (.cpp, .h and .qml) to reproduce the error.