Set 'Checked' state in the Task Bar

[Michael]

I use a toolbar button to toggle between normal and private windows.
Here is the code:

Code: Select all

    OpenBrowserWindow({private: !PrivateBrowsingUtils.isWindowPrivate(window)});
    setTimeout(BrowserTryToCloseWindow, 80);

I use 'setTimeout' in order to prevent some flickering.

When the new window opens, it gets the focus.
When the command 'BrowserTryToCloseWindow' is executed, the focus returns to the old window.
When the old window is closed, the new one turns 'active' but it isn't 'checked' in Windows Task Bar.

How can I fix that?

Checked
UnChecked

Win 7, Classic Theme.

Thank you.