M openbox/frame.c → openbox/frame.c

@@ -765,7 +765,9 @@ self->area.width,
                               self->area.height);
 
         /* when the client has StaticGravity, it likes to move around.
-           also this correctly positions the client when it maps */
+           also this correctly positions the client when it maps.
+           this also needs to be run when the frame's decorations sizes change!
+        */
         XMoveWindow(ob_display, self->client->window,
                     self->size.left, self->size.top);