Signal QDesktopWidget::workAreaResized ( int screen ) does not notify about disconnecting hdmi cable

Qt 5.2.0; OS Windows 8; x86 architecture.

Test case:
Reproducibility: 100%
It's necessary to have PC with two monitors to reproduce this problem; one of them should be connected to PC by HDMI;

Steps to reproduce:
1) Build and run testcase from attachment; (both monitors will show red screen)
2) Disconnect HDMI cable from PC
Result: slot Test::onWorkAreaResized, which is connected to signal QDesktopWidget::workAreaResized, will not invoked