Run qtdeclarative/examples/quick/quickwidgets/qquickviewcomparison on an Android device.

The result is a black screen and occasionally the virtual keyboard appearing. The application is somehow blocked. Trying to use the back button is futile - the 'app not responding' note will come up after some time.

If test.qml gets edited so that focus: true is removed from the TextInput, the application starts behaving properly.

Or almost properly. By tapping the edit field, the VKB comes up but no input gets sent to the QML element.