http://bugs.winehq.org/show_bug.cgi?id=9168
------- Additional Comments From weed_richard@hotmail.com 2007-03-08 19:06 ------- I did read the bug you linked to prior to posting mine.
I run Halo from an icon on my X desktop. The focus remains on my desktop, so it may be similar.
I found a work-around for 0.9.42 which is to start another Wine app like regedit and then I can alt-tab back and forth giving Halo the focus.