Merge pull request #5860 from 29jm/fix-itemlist-separators

Fix ItemList.clear() not removing separators

scene/gui/item_list.cpp

@@ -336,6 +336,7 @@ void ItemList::clear(){
 	current=-1;
 	ensure_selected_visible=false;
 	update();
+	shape_changed=true;
 	defer_select_single=-1;
 
 }