From my tests, the real culprit seems to be compiz-decorator: it treats all windows as if they were all of normal type, ignoring the theme’s settings for dialogs, modal dialogs, and utility windows.
If I use metacity and not compiz-decorator, however, all dialogs appear with the correct round buttons, and hence the bug is not in the themes.
From my tests, the real culprit seems to be compiz-decorator: it treats all windows as if they were all of normal type, ignoring the theme’s settings for dialogs, modal dialogs, and utility windows.
If I use metacity and not compiz-decorator, however, all dialogs appear with the correct round buttons, and hence the bug is not in the themes.