Tools GUI windows - disable click through UI background

TLM/TLM/UI/Helpers/Highlight.cs

@@ -1,6 +1,7 @@
 namespace TrafficManager.UI.Helpers {
     using ColossalFramework;
     using ColossalFramework.Math;
+    using ColossalFramework.UI;
     using TrafficManager.Util;
     using TrafficManager.Util.Extensions;
     using UnityEngine;
@@ -384,6 +385,10 @@ public static bool DrawGenericOverlayTexture(Texture2D texture,
             GUI.color = guiColor;
             GUI.DrawTexture(screenRect, texture);
 
+            if (hovered) {
+                UIInput.MouseUsed();
+            }
+
             return hovered;
         }
     }

TLM/TLM/UI/SubTools/TimedTrafficLights/TimedTrafficLightsTool.cs

@@ -333,6 +333,10 @@ public override void OnToolGUI(Event e) {
                     break;
                 }
             }
+
+            if (_cursorInSecondaryPanel) {
+                UIInput.MouseUsed();
+            }
         }
 
         public override void RenderOverlay(RenderManager.CameraInfo cameraInfo) {
@@ -2550,6 +2554,8 @@ ref nodeId.ToNode(),
             if (!hoveredSegment) {
                 _hoveredButton[0] = 0;
                 _hoveredButton[1] = 0;
+            } else {
+                UIInput.MouseUsed();
             }
         }
 

TLM/TLM/UI/SubTools/VehicleRestrictionsTool.cs

@@ -2,6 +2,7 @@ namespace TrafficManager.UI.SubTools {
     using ColossalFramework;
     using static Util.SegmentLaneTraverser;
     using System.Collections.Generic;
+    using ColossalFramework.UI;
     using TrafficManager.API.Traffic.Enums;
     using TrafficManager.Manager.Impl;
     using TrafficManager.State;
@@ -163,6 +164,10 @@ public override void OnToolGUI(Event e) {
                 // overlayHandleHovered = false;
             }
 
+            if (cursorInSecondaryPanel) {
+                UIInput.MouseUsed();
+            }
+
             // ShowSigns(false);
         }
 

TLM/TLM/UI/WhatsNew/WhatsNew.cs

@@ -20,6 +20,7 @@ public WhatsNew() {
             LoadChangelogs();
         }
 
+        [CanBeNull]
         public static Version PreviouslySeenVersion {
             get => GlobalConfig.Instance.Main.LastWhatsNewPanelVersion;
             set {
@@ -31,7 +32,10 @@ public static Version PreviouslySeenVersion {
             }
         }
 
-        public bool Shown => PreviouslySeenVersion >= CurrentVersion;
+        /// <summary>
+        /// Return info if What's new panel was shown in current version
+        /// </summary>
+        public bool Shown => CurrentVersion <= PreviouslySeenVersion;
 
         public List<Changelog> Changelogs { get; private set; }