From 8d507040f0e0a5e71e9a0159086468e8e2790181 Mon Sep 17 00:00:00 2001
From: Ross Ferguson <ross.c.ferguson@btinternet.com>
Date: Wed, 22 Jul 2020 16:40:26 +0100
Subject: [PATCH] Make logic more robust

---
 Terminal.Gui/Views/ComboBox.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Terminal.Gui/Views/ComboBox.cs b/Terminal.Gui/Views/ComboBox.cs
index 7a796d2c2..2912999f7 100644
--- a/Terminal.Gui/Views/ComboBox.cs
+++ b/Terminal.Gui/Views/ComboBox.cs
@@ -144,7 +144,7 @@ namespace Terminal.Gui {
 
 				// Determine if this view is hosted inside a dialog and is the only control
 				for (View view = this.SuperView; view != null; view = view.SuperView) {
-					if (view is Dialog && view.Subviews.Count == 1 && view.Subviews [0].Subviews.Count == 1) {
+					if (view is Dialog && SuperView != null && SuperView.Subviews.Count == 1 && SuperView.Subviews[0] == this) {
 						autoHide = false;
 						break;
 					}