From 8f95447108cd7b3a041f0c5e991d6e0181bbebc7 Mon Sep 17 00:00:00 2001
From: Nick D'Ademo <nickdademo@gmail.com>
Date: Sat, 24 Oct 2020 03:00:33 +0800
Subject: [PATCH] Fix. (#264)

---
 src/DockFocusController.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/DockFocusController.cpp b/src/DockFocusController.cpp
index 77e73c1..6f3318a 100644
--- a/src/DockFocusController.cpp
+++ b/src/DockFocusController.cpp
@@ -240,7 +240,11 @@ void CDockFocusController::onApplicationFocusChanged(QWidget* focusedOld, QWidge
 		auto OtherDockWidgetTab = internal::findParent<CDockWidgetTab*>(focusedNow);
 		if (OtherDockWidgetTab && focusedOld)
 		{
-			focusedOld->setFocus();
+			auto OldFocusedDockWidget = internal::findParent<CDockWidget*>(focusedOld);
+			if (OldFocusedDockWidget)
+			{
+				focusedOld->setFocus();
+			}
 			return;
 		}
 	}