diff --git a/lcl/include/control.inc b/lcl/include/control.inc
index b001293cee..f07a26bee2 100644
--- a/lcl/include/control.inc
+++ b/lcl/include/control.inc
@@ -959,6 +959,8 @@ begin
     AdjustSize
   else
     RequestAlign;
+  if (csDesigning in ComponentState) and (Parent <> nil) then
+    Parent.Invalidate;
 end;
 
 function TControl.IsBorderSpacingInnerBorderStored: Boolean;