[FancyZones] "Match not found" fix update for the single layout for all monitors (#11846)

src/modules/fancyzones/editor/FancyZonesEditor/Overlay.cs

@@ -116,35 +116,7 @@ namespace FancyZonesEditor
 
         private int _currentDesktop;
 
-        public bool SpanZonesAcrossMonitors
+        public bool SpanZonesAcrossMonitors { get; set; }
-        {
-            get
-            {
-                return _spanZonesAcrossMonitors;
-            }
-
-            set
-            {
-                _spanZonesAcrossMonitors = value;
-
-                if (_spanZonesAcrossMonitors)
-                {
-                    Rect workArea = default;
-                    Rect bounds = default;
-
-                    foreach (Monitor monitor in Monitors)
-                    {
-                        workArea = Rect.Union(workArea, monitor.Device.WorkAreaRect);
-                        bounds = Rect.Union(bounds, monitor.Device.ScaledBounds);
-                    }
-
-                    Monitors.Clear();
-                    Monitors.Add(new Monitor(bounds, workArea));
-                }
-            }
-        }
-
-        private bool _spanZonesAcrossMonitors;
 
         public bool MultiMonitorMode
         {

src/modules/fancyzones/editor/FancyZonesEditor/Utils/FancyZonesEditorIO.cs

@@ -419,6 +419,19 @@ namespace FancyZonesEditor.Utils
                             }
                         }
                     }
+                    else
+                    {
+                        Rect workArea = default;
+
+                        foreach (NativeMonitorData nativeData in editorParams.Monitors)
+                        {
+                            Rect monitorWorkArea = new Rect(nativeData.LeftCoordinate, nativeData.TopCoordinate, nativeData.Width, nativeData.Height);
+                            workArea = Rect.Union(workArea, monitorWorkArea);
+                        }
+
+                        var monitor = new Monitor(workArea, workArea);
+                        App.Overlay.AddMonitor(monitor);
+                    }
                 }
                 catch (Exception ex)
                 {