Window icon is not restored after qmessagebox is closed

Device: S60 5.0 Public SDK Emulator
Firmware version: v1.0
Release: c460009821fd646355bb2cd3d1909992483a4678
Platform: WINSCW UDEB
Compiler used: Nokia Carbide C/C++ Compiler for Windows/x86. Version 3.2.5 build 482
Application: WindowIcon (attached)
Launched from: Application Menu
Problem description: Window icon is not restored after qmessagebox is closed
Steps:
1. Launch attached app -> heart is shown as an window icon
2. Click "Click Me" push button -> Since visible window is changed the icon from status pane is removed
3. Close the message box -> Heart icon is not restored. Switching orientation makes the icon visible again.