Window Minimize and Restore issue

Hi Dear CVI experts.

I'm using this configuration : CV 2010 (SP1) on Windows 7 (32 bit).

I noticed a strange behaviour similar to the one in this thread:

http://forums.ni.com/t5/LabWindows-CVI/Minimize-Maximize-Restore-window-bug-with-CVI-8-5-1/m-p/802515/highlight/true#M38176

The mentioned one seems to only have the problem that window content is not being drawn correct after restore. In my case the window keeps completely invisible.

Here a description to reproduce the problem:

- Start an application with a main window, with Window-Zoom maximized.

- Click on the application icon in the taskbar to hide the window.

- Clicking again on the application icon in the taskbar doesn't bring the window back - it stays invisible.

This effect only happens when the title bar of the window is visible. When the titlear is not visible, it works correctly. When the window is being minimized by the buttons on top right of the window there's also no problem.

Is this a known issue that has already been fixed or does a workaround exist ?

Best regards

   Tom

P.S.: My colleague has CVI 2013 installed and we could reproduce the effect also on his machine