Index: obj_pstk_proto.c
===================================================================
--- obj_pstk_proto.c	(revision 19450)
+++ obj_pstk_proto.c	(revision 19451)
@@ -738,8 +738,10 @@
 		poly->pa = pcb_polyarea_create();
 		pcb_poly_contour_inv(pl);
 		pcb_polyarea_contour_include(poly->pa, pl);
+		poly->inverted = 1;
 	}
-
+	else
+		poly->inverted = 0;
 }
 
 /*** Undoable hole change ***/