If you have the preferences window open, and the wisdom window pops up, when you click OK it minimizes both and you can't get the preferences window to show again.
Shows this error:
If you leave it alone after that, the next wisdom window will also show the preferences window again. You can click OK on the preferences window before clicking OK on the wisdom window, at that time, to fix it and it will work fine again.
Or you have to force it to show another wisdom window so you can get the preferences window back and click OK on it.