How to prevent on-screen keyboard from focus on last win..

Hi
I have a serious problem, I like to type using on-screen keyboard a lot to but there's annoying problem.

How to prevent on-screen keyboard from focus on current window minimize on it instead of focus on last active window on-screen keyboard maximize on it.


For example :
If i use on-screen keyboard to type in any program like "Google Chrome"
and minimize on-screen keyboard to taskbar
and open any program like Notepad
so if i press on "on-screen keyboard" to maximize it's focus on "Google Chrome" (last active window on-screen keyboard minimize on it)
instead of focus on Notepad (it focus on last active window on-screen keyboard maximize on it if it minimized in taskbar)
so i have to click on notepad again and it's very annoy

shortly :
- Any Program have active window like "Google Chrome" (on-screen keyboard run on it)
- Minimize on-screen keyboard to taskbar
- Open any program like Notepad
- Click on "on-screen keyboard" icon in taskbar to maximize it
- On-screen keyboard focus on "Google Chrome" instead of focus on Notepad

Please any fix to this problem even from registry.

I hope I'm clear, Please try to use on-screen keyboard maybe you will see what i'm talking about

Please Notes:
This bug in windows itself not just for me