Well, no one has answered this question in almost three years. I can only hope that the issue has been resolved, and it has just never been posted. I, too, am being plagued by corner windows automatically matching parameters. A problem when I want one side ganged into a row of windows, and the other one not. Furthermore, I can't seem to revert to regular windows; they are automatically merging and renaming themselves "corner windows". Lastly, these same problem windows are rejecting the "show label" in elevation. Thanks for any advice....