X (xinerama) doesn't restore window locations

[David Chmelik]

I usually always have my PC on, but of course go away and come back.  
Sometimes the screens (three) go inactive and sometimes I turn them off.  
Every time I make them active again, no X program has its location 
restored but in fact every one is moved somewhere else: often/usually to 
another screen.  It's a problem with every X window manager (WM) & desktop 
environment (DE) I ever used including KDE 3 (and TDE), 4, 5, and XFCE 
almost as long.  Is this a xinerama problem and can it be fixed?