minimized window closes Npp, why ? ( is a bug or malware of OS ? )
Issue in the title !
Unfortunately, you have not given us anything to base an opinion on. Without data and details about what you tried, we’d just have to use our Magic 8-Ball to give you an answer.
I will just state that I have never seen minimizing the Notepad++ window close the application.
Sorry my invalid feedback, I am found the option that the editor is being minimized to system tray instead of close. i.e. no problems on minimizing ! Opened files will NOT closed in the editor minimized to the taskbar.