Mouse tracking doesn’t work with OpenGL widget on Mac OS

Mouse are being logged erratically when mouse tracking is set for OpenGL widget. Attached is a test project illustrating the issue. Mouse events are being logged with qDebug, you can easily tell whether tracking works fine or not by moving and clicking mouse and looking at the output.

Tested and confirmed on Mac OS 10.7 and 10.8 The issue is absent on Windows, or with Qt 4.8.