Is there any property that forces an application to start in full screen if it supports it?
I noticed in
~/Library/Saved Application State/com.mycompany.myapp.savedState/windows.plist there's a key that saves the window state on some applications.
<array> <dict> <key>NSIsFullScreen</key> <true/>
Some applications write it while open but don't save it and then start again not in full screen. And locking
windows.plist will log an error and the app will still launch in a window.