File compiz-no-focus-prevention-for-windows-without-decorations.diff of Package compiz
--- a/src/window.c
+++ b/src/window.c
@@ -4249,6 +4249,9 @@ focusWindowOnMap (CompWindow *w)
if (!wUserTime)
return FALSE;
+ if (!(w->mwmDecor & (MwmDecorAll | MwmDecorTitle)))
+ return TRUE;
+
/* can't get user time for active window */
active = findWindowAtDisplay (d, d->activeWindow);
if (!active || !getWindowUserTime (active, &aUserTime))