From 7d33e5a4a02feb4d84392ec195648ad25e7f6986 Mon Sep 17 00:00:00 2001
From: Corran Webster <cwebster@enthought.com>
Date: Mon, 4 Jul 2022 14:14:17 +0100
Subject: [PATCH] Hide controls after deleteLater is called, not before.

---
 traitsui/qt4/toolkit.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/traitsui/qt4/toolkit.py b/traitsui/qt4/toolkit.py
index 839065e7e..a91f647c8 100644
--- a/traitsui/qt4/toolkit.py
+++ b/traitsui/qt4/toolkit.py
@@ -382,8 +382,8 @@ def destroy_control(self, control):
 
         # This may be called from within the finished() signal handler so we
         # need to do the delete after the handler has returned.
-        control.hide()
         control.deleteLater()
+        control.hide()
 
     def destroy_children(self, control):
         """Destroys all of the child controls of a specified GUI toolkit