Created attachment 237773 [details]
Screenshot of Webinspector
When de-attaching the webinspector from the main browser window, I can't find any way to re-attaching it. There's no icon for that in the webinspector-window (earlier versions of webkit presented a small icon in the bottom bar of the webinspector. But there isn't a bottom bar anymore) and there seems to be no menu entry for attaching the window back to the browser window.
Maybe I'm too dumb, maybe it's a bug. Luckily I was able to get it re-attached via the old Safari application. Sticking it there to the browser window was adopted from the WebKit application.
Normally the dock buttons are are in the top-right part of the NSWindow. In your screenshot there is a n aqua button in the top right of the window that I am not familiar with. What is that button? Is it part of the default system behavior or is another service adding that?
OS X 10.6 is not a supported platform.