unsigned long mask;
BLOCK_INPUT;
- mask = CWBackPixel | CWOverrideRedirect | CWSaveUnder | CWEventMask;
+ mask = CWBackPixel | CWOverrideRedirect | CWEventMask;
+ if (DoesSaveUnders (dpyinfo->screen))
+ mask |= CWSaveUnder;
+
/* Window managers look at the override-redirect flag to determine
whether or net to give windows a decoration (Xlib spec, chapter
3.2.8). */