It's not really a Windows limitation, nor is it SONAR's fault. Windows does always dispatch keystrokes to the window that has focus (imagine the chaos if it didn't!), and it's up to the
plugin to pass keystrokes back to the host application. Some do it well, others do not do it at all. Some (e.g. Ozone) have an option to pass
all keystrokes to the host. Check with the plugin vendor or the plugin's documentation for a solution.