BUG: Cannot focus a disabled or invisible window

[father of monstermagnet]

When i have opend two windows ie. main and scripting console and close
the main window that girder becomes iconic and then try to reopen it:

Error: Cannot focus a disabled or invisible window.

Sometimes also violation in module ntdll.dll

[Ron]

I was able to reproduce this one. I am working on it.

[Ron]

Fixed.