See attached test case - both windows have the focus. If you run the test in a browser (disable popup blocking for it to work), only one window will have the focus. Note that the chromium DRT sets the focus to the new window only.
Created attachment 145129 [details] regression test
Darin, according to SVN the focus handling code on mac was originally contributed by you. I admit that I lack the insight into mac's DRT implementation to explain what is happening here. Could you shed some light on this or add somebody who might? thanks
adding tim, as this is related to bug 87884
note that the -expected.txt shows the incorrect result which is currently produced by drt