I think that there really needs to be a way to turn this off. Lately I have been doing some mastering for a company that has multiple versions of each song that need the same mastering processing, so I have each version on it's own track, trimmed up properly and faded etc. Then I mute all tracks except the version I need to render and paste the correct title. It really kills my workflow when WL jumps to the edit window to show me each rendered file as some of the versions are very short and render in just a second or two.
Would it be possible to get an option to disable showing each rendered file when it completes in the edit window? I like that it shows up there to verify, but having each one automatically display really slows things down when you're rendering hundreds of files a day.