Scene2D items do not receive keyboard input

The QML item that is rendered to the 3D scene using Scene2D does not receive any keyboard input.

Steps to reproduce:

1. Using the scene2d example, add a TextField to LogoControls.qml.
2. Run scene2d example.
3. Use middle click to stop the Scene2D cube from spinning.
4. Click on Text input.
5. Try to type something using the keyboard.

Results: No text is displayed on TextField

Attached is my modified LogoControls.qml file with added TextField.