From 5a039542851d88b2c5128f69403fac02540199b0 Mon Sep 17 00:00:00 2001
From: Buchfink <buchfink@sws.local>
Date: Tue, 1 Mar 2022 14:25:45 +0100
Subject: [PATCH] Keep ActiveContent when switching RootPanel

---
 source/Components/AvalonDock/Layout/LayoutRoot.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/source/Components/AvalonDock/Layout/LayoutRoot.cs b/source/Components/AvalonDock/Layout/LayoutRoot.cs
index 73fe1b4a..ba81f75c 100644
--- a/source/Components/AvalonDock/Layout/LayoutRoot.cs
+++ b/source/Components/AvalonDock/Layout/LayoutRoot.cs
@@ -98,9 +98,19 @@ public LayoutPanel RootPanel
 			{
 				if (_rootPanel == value) return;
 				RaisePropertyChanging(nameof(RootPanel));
+				var activeContent = ActiveContent;
+				var activeRoot = activeContent?.Root;
 				if (_rootPanel != null && _rootPanel.Parent == this) _rootPanel.Parent = null;
 				_rootPanel = value ?? new LayoutPanel(new LayoutDocumentPane());
 				_rootPanel.Parent = this;
+				if (ActiveContent == null && activeRoot == this && activeContent != null)
+				{
+					ActiveContent = activeContent;
+					if (ActiveContent != activeContent)
+					{
+						ActiveContent = activeContent;
+					}
+				}
 				RaisePropertyChanged(nameof(RootPanel));
 			}
 		}