diff --git a/components/detournavigator/asyncnavmeshupdater.cpp b/components/detournavigator/asyncnavmeshupdater.cpp
index cc3156a6c..424d1f260 100644
--- a/components/detournavigator/asyncnavmeshupdater.cpp
+++ b/components/detournavigator/asyncnavmeshupdater.cpp
@@ -24,6 +24,22 @@ namespace
 
 namespace DetourNavigator
 {
+    static std::ostream& operator <<(std::ostream& stream, UpdateNavMeshStatus value)
+    {
+        switch (value)
+        {
+            case UpdateNavMeshStatus::ignore:
+                return stream << "ignore";
+            case UpdateNavMeshStatus::removed:
+                return stream << "removed";
+            case UpdateNavMeshStatus::add:
+                return stream << "add";
+            case UpdateNavMeshStatus::replaced:
+                return stream << "replaced";
+        }
+        return stream << "unknown";
+    }
+
     AsyncNavMeshUpdater::AsyncNavMeshUpdater(const Settings& settings)
         : mSettings(std::cref(settings))
         , mShouldStop()
@@ -91,7 +107,8 @@ namespace DetourNavigator
 
         const auto recastMesh = getRecastMesh();
 
-        updateNavMesh(job.mAgentHalfExtents, *recastMesh, job.mChangedTile, mSettings, *job.mNavMeshCacheItem);
+        const auto status = updateNavMesh(job.mAgentHalfExtents, *recastMesh, job.mChangedTile, mSettings,
+            *job.mNavMeshCacheItem);
 
         const auto finish = std::chrono::steady_clock::now();
 
@@ -99,7 +116,7 @@ namespace DetourNavigator
 
         using FloatMs = std::chrono::duration<float, std::milli>;
 
-        log("cache updated for agent=", job.mAgentHalfExtents,
+        log("cache updated for agent=", job.mAgentHalfExtents, " status=", status,
             " time=", std::chrono::duration_cast<FloatMs>(finish - start).count(), "ms");
     }
 
diff --git a/components/detournavigator/makenavmesh.cpp b/components/detournavigator/makenavmesh.cpp
index 52fa53068..fb2fb2bb5 100644
--- a/components/detournavigator/makenavmesh.cpp
+++ b/components/detournavigator/makenavmesh.cpp
@@ -231,6 +231,18 @@ namespace
                 ++mNavMeshRevision;
         }
     };
+
+    UpdateNavMeshStatus makeUpdateNavMeshStatus(bool removed, bool add)
+    {
+        if (removed && add)
+            return UpdateNavMeshStatus::replaced;
+        else if (removed)
+            return UpdateNavMeshStatus::removed;
+        else if (add)
+            return UpdateNavMeshStatus::add;
+        else
+            return UpdateNavMeshStatus::ignore;
+    }
 }
 
 namespace DetourNavigator
@@ -257,7 +269,7 @@ namespace DetourNavigator
         return navMesh;
     }
 
-    void updateNavMesh(const osg::Vec3f& agentHalfExtents, const RecastMesh& recastMesh,
+    UpdateNavMeshStatus updateNavMesh(const osg::Vec3f& agentHalfExtents, const RecastMesh& recastMesh,
         const TilePosition& changedTile, const Settings& settings, NavMeshCacheItem& navMeshCacheItem)
     {
         log("update NavMesh with mutiple tiles:",
@@ -277,20 +289,22 @@ namespace DetourNavigator
         const auto y = changedTile.y();
 
         AutoIncrementRevision incRev(navMeshCacheItem.mNavMeshRevision);
+        bool removed = false;
 
         {
             const auto locked = navMesh.lock();
-            incRev.mNavMeshChanged = dtStatusSucceed(locked->removeTile(locked->getTileRefAt(x, y, 0),
-                                                                        nullptr, nullptr));
+            removed = dtStatusSucceed(locked->removeTile(locked->getTileRefAt(x, y, 0), nullptr, nullptr));
         }
 
+        incRev.mNavMeshChanged = removed;
+
         const auto& boundsMin = recastMesh.getBoundsMin();
         const auto& boundsMax = recastMesh.getBoundsMax();
 
         if (boundsMin == boundsMax)
         {
             log("ignore add tile: recastMesh is empty");
-            return;
+            return makeUpdateNavMeshStatus(removed, false);
         }
 
         const auto tileBounds = makeTileBounds(settings, changedTile);
@@ -303,7 +317,7 @@ namespace DetourNavigator
         if (!navMeshData.mValue)
         {
             log("ignore add tile: NavMeshData is null");
-            return;
+            return makeUpdateNavMeshStatus(removed, false);
         }
 
         const auto status = navMesh.lock()->addTile(navMeshData.mValue.get(), navMeshData.mSize,
@@ -313,5 +327,7 @@ namespace DetourNavigator
         else
             log("failed to add tile with status=", WriteDtStatus {status});
         navMeshData.mValue.release();
-}
+
+        return makeUpdateNavMeshStatus(removed, dtStatusSucceed(status));
+    }
 }
diff --git a/components/detournavigator/makenavmesh.hpp b/components/detournavigator/makenavmesh.hpp
index 03c3e6362..96e655be8 100644
--- a/components/detournavigator/makenavmesh.hpp
+++ b/components/detournavigator/makenavmesh.hpp
@@ -20,9 +20,17 @@ namespace DetourNavigator
 
     using NavMeshPtr = std::shared_ptr<dtNavMesh>;
 
+    enum class UpdateNavMeshStatus
+    {
+        ignore,
+        removed,
+        add,
+        replaced
+    };
+
     NavMeshPtr makeEmptyNavMesh(const Settings& settings);
 
-    void updateNavMesh(const osg::Vec3f& agentHalfExtents, const RecastMesh& recastMesh,
+    UpdateNavMeshStatus updateNavMesh(const osg::Vec3f& agentHalfExtents, const RecastMesh& recastMesh,
             const TilePosition& changedTile, const Settings& settings, NavMeshCacheItem& navMeshCacheItem);
 }
 
diff --git a/files/settings-default.cfg b/files/settings-default.cfg
index 496cfaf2b..f6fc99c0e 100644
--- a/files/settings-default.cfg
+++ b/files/settings-default.cfg
@@ -614,4 +614,6 @@ recast mesh path prefix =
 
 # Write nav mesh file at path with this prefix
 nav mesh path prefix =
+
+# Render nav mesh (true, false)
 enable render = false