You might want to try opening new windows by right-click "Open in background" instead of "Open in new window", this way the new window will not get the focus.
I have read, however, that some people seem to have problems with the status bar disappearing for background windows - works fine for me though. Hope this helps ...
Hopefully, the "new window grabs focus" issue won't be in the next version anymore, it's indeed a bit annoying