As the description states, this extension includes it's own versions of all of Window Commands functions as they had to be reimplemented in a different way (the window being in an external process and all). You would remove Window Commands when switching to this extension.
ahh. Sorry. I should read more :-)
This extension doesn't appear to include the window_set_topmost function from Window Commands - or am I missing something?
Thank you for all of the excellent software, by the way.