yea ... It doesn't work for me either on current. I am pretty sure I remember using that functionality about 6 months ago (was on current then).
By doing a:
Code:
tail -f .xsession-errors
and then Ctrl+Alt+w, followed by fvwm (or twm), I get this:
Code:
error 8: BadMatch (invalid parameter attributes) request 142 minor 6 serial 18384433
error 9: BadDrawable (invalid Pixmap or Window parameter) request 139 minor 4 serial 18384434
error 4: BadPixmap (invalid Pixmap parameter) request 54 minor 0 serial 18386834
Don't really know what that means, and I am a cwm fan boy, so it's not really a problem for me, but you are not crazy. It does not appear to be working like it used to.