diff --git a/source/Components/AvalonDock/DockingManager.cs b/source/Components/AvalonDock/DockingManager.cs
index f42c91fd..f0837ca9 100644
--- a/source/Components/AvalonDock/DockingManager.cs
+++ b/source/Components/AvalonDock/DockingManager.cs
@@ -1497,7 +1497,7 @@ public LayoutFloatingWindowControl CreateFloatingWindow(LayoutContent contentMod
 						FloatingWidth = contentModel.FloatingWidth,
 						FloatingHeight = contentModel.FloatingHeight
 					};
-					_ = CreateFloatingWindowForLayoutAnchorableWithoutParent(pane, isContentImmutable);
+					return CreateFloatingWindowForLayoutAnchorableWithoutParent(pane, isContentImmutable);
 				}
 			}