diff --git a/Assets/IsoTools/Scripts/Internal/IsoSortingSolver.cs b/Assets/IsoTools/Scripts/Internal/IsoSortingSolver.cs
index a86f511..11e91d9 100644
--- a/Assets/IsoTools/Scripts/Internal/IsoSortingSolver.cs
+++ b/Assets/IsoTools/Scripts/Internal/IsoSortingSolver.cs
@@ -35,7 +35,7 @@ namespace IsoTools.Internal {
 			return false;
 		}
 
-		public void OnDrawGizmos() {
+		public void OnDrawGizmos(IsoWorld iso_world) {
 		}
 
 		// ---------------------------------------------------------------------
diff --git a/Assets/IsoTools/Scripts/Internal/IsoWarningSolver.cs b/Assets/IsoTools/Scripts/Internal/IsoWarningSolver.cs
new file mode 100644
index 0000000..98158e6
--- /dev/null
+++ b/Assets/IsoTools/Scripts/Internal/IsoWarningSolver.cs
@@ -0,0 +1,131 @@
+using UnityEngine;
+using System.Collections.Generic;
+
+#if UNITY_EDITOR
+using UnityEditor;
+#endif
+
+#if UNITY_5_5_OR_NEWER
+using UnityEngine.Profiling;
+#endif
+
+namespace IsoTools.Internal {
+	public class IsoWarningSolver {
+		IsoWarningSolverImpl _impl =
+		#if UNITY_EDITOR
+			new IsoWarningSolverEditorImpl();
+		#else
+			new IsoWarningSolverImpl();
+		#endif
+
+		public void OnAddIsoObject(IsoObject iso_object) {
+			_impl.OnAddIsoObject(iso_object);
+		}
+
+		public void OnRemoveIsoObject(IsoObject iso_object) {
+			_impl.OnRemoveIsoObject(iso_object);
+		}
+
+		public bool OnMarkDirtyIsoObject(IsoObject iso_object) {
+			return _impl.OnMarkDirtyIsoObject(iso_object);
+		}
+
+		public void OnDrawGizmos(IsoWorld iso_world) {
+			_impl.OnDrawGizmos(iso_world);
+		}
+
+		public void StepSortingAction(IsoWorld iso_world) {
+			_impl.StepSortingAction(iso_world);
+		}
+
+		public void Clear() {
+			_impl.Clear();
+		}
+	}
+
+	class IsoWarningSolverImpl {
+		public virtual void OnAddIsoObject(IsoObject iso_object) {}
+		public virtual void OnRemoveIsoObject(IsoObject iso_object) {}
+		public virtual bool OnMarkDirtyIsoObject(IsoObject iso_object) { return false; }
+		public virtual void OnDrawGizmos(IsoWorld iso_world) {}
+		public virtual void StepSortingAction(IsoWorld iso_world) {}
+		public virtual void Clear() {}
+	}
+
+	class IsoWarningSolverEditorImpl : IsoWarningSolverImpl {
+		const int IsoObjectsPerFrame = 100;
+
+		uint                    _objCounter = 0;
+		IsoAssocList<IsoObject> _isoObjects = new IsoAssocList<IsoObject>(47);
+
+		// ---------------------------------------------------------------------
+		//
+		// Overrides
+		//
+		// ---------------------------------------------------------------------
+
+		public override void OnAddIsoObject(IsoObject iso_object) {
+			_isoObjects.Add(iso_object);
+		}
+
+		public override void OnRemoveIsoObject(IsoObject iso_object) {
+			_isoObjects.Remove(iso_object);
+		}
+
+		public override void StepSortingAction(IsoWorld iso_world) {
+			Profiler.BeginSample("IsoWarningSolver.ProcessTransforms");
+			ProcessTransforms();
+			Profiler.EndSample();
+		}
+
+		// ---------------------------------------------------------------------
+		//
+		// Private
+		//
+		// ---------------------------------------------------------------------
+
+		void ProcessTransforms() {
+			var check_count = Application.isPlaying
+				? Mathf.Min(IsoObjectsPerFrame, _isoObjects.Count)
+				: _isoObjects.Count;
+			for ( var i = 0; i < check_count; ++i ) {
+				var obj_index  = (_objCounter++) % _isoObjects.Count;
+				var iso_object = _isoObjects[(int)obj_index];
+				CheckScaledTransform(iso_object);
+				CheckRotatedTransform(iso_object);
+				CheckChangedTransform(iso_object);
+			}
+		}
+
+		void CheckScaledTransform(IsoObject iso_object) {
+			if ( iso_object.transform.lossyScale != Vector3.one ) {
+				Debug.LogWarning(
+					"Don't change 'transform.scale' for IsoObject and its parents!",
+					iso_object);
+			}
+		}
+
+		void CheckRotatedTransform(IsoObject iso_object) {
+			if ( iso_object.transform.rotation != Quaternion.identity ) {
+				Debug.LogWarning(
+					"Don't change 'transform.rotation' for IsoObject and its parents!",
+					iso_object);
+			}
+		}
+
+		void CheckChangedTransform(IsoObject iso_object) {
+			var iso_world = iso_object.isoWorld;
+			if ( iso_world ) {
+				var needed_position  = iso_world.IsoToScreen(iso_object.position);
+				var current_position = iso_object.transform.position;
+				if ( !IsoUtils.Vec2Approximately(needed_position, current_position) ) {
+					Debug.LogWarning(
+						"Don't change 'IsoObject.transform.position' manually!\n" +
+						"Use 'IsoObject.position' instead.",
+						iso_object);
+					iso_object.FixTransform();
+				}
+			}
+		}
+	}
+}
\ No newline at end of file
diff --git a/Assets/IsoTools/Scripts/Internal/IsoWarningSolver.cs.meta b/Assets/IsoTools/Scripts/Internal/IsoWarningSolver.cs.meta
new file mode 100644
index 0000000..ac0a52c
--- /dev/null
+++ b/Assets/IsoTools/Scripts/Internal/IsoWarningSolver.cs.meta
@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: 389c69714ba074780af3cc5b345780ca
+timeCreated: 1483092700
+licenseType: Free
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/IsoTools/Scripts/IsoWorld.cs b/Assets/IsoTools/Scripts/IsoWorld.cs
index c7c15fa..652ad61 100644
--- a/Assets/IsoTools/Scripts/IsoWorld.cs
+++ b/Assets/IsoTools/Scripts/IsoWorld.cs
@@ -9,6 +9,7 @@ namespace IsoTools {
 		Matrix4x4        _isoRMatrix    = Matrix4x4.identity;
 		IsoScreenSolver  _screenSolver  = new IsoScreenSolver();
 		IsoSortingSolver _sortingSolver = new IsoSortingSolver();
+		IsoWarningSolver _warningSolver = new IsoWarningSolver();
 
 		// ---------------------------------------------------------------------
 		//
@@ -333,6 +334,9 @@ namespace IsoTools {
 			if ( _sortingSolver.OnMarkDirtyIsoObject(iso_object) ) {
 				Internal_SetDirtyInEditorMode();
 			}
+			if ( _warningSolver.OnMarkDirtyIsoObject(iso_object) ) {
+				Internal_SetDirtyInEditorMode();
+			}
 		}
 
 		// ---------------------------------------------------------------------
@@ -369,6 +373,7 @@ namespace IsoTools {
 			if ( _sortingSolver.StepSortingAction(this, _screenSolver) ) {
 				Internal_SetDirtyInEditorMode();
 			}
+			_warningSolver.StepSortingAction(this);
 		}
 
 		// ---------------------------------------------------------------------
@@ -394,18 +399,21 @@ namespace IsoTools {
 			base.OnDisable();
 			_screenSolver.Clear();
 			_sortingSolver.Clear();
+			_warningSolver.Clear();
 		}
 
 		protected override void OnAddIsoObjectToWorld(IsoObject iso_object) {
 			base.OnAddIsoObjectToWorld(iso_object);
 			_screenSolver.OnAddIsoObject(iso_object);
 			_sortingSolver.OnAddIsoObject(iso_object);
+			_warningSolver.OnAddIsoObject(iso_object);
 		}
 
 		protected override void OnRemoveIsoObjectFromWorld(IsoObject iso_object) {
 			base.OnRemoveIsoObjectFromWorld(iso_object);
 			_screenSolver.OnRemoveIsoObject(iso_object);
 			_sortingSolver.OnRemoveIsoObject(iso_object);
+			_warningSolver.OnRemoveIsoObject(iso_object);
 		}
 
 	#if UNITY_EDITOR
@@ -436,7 +444,8 @@ namespace IsoTools {
 
 		void OnDrawGizmos() {
 			_screenSolver.OnDrawGizmos(this);
-			_sortingSolver.OnDrawGizmos();
+			_sortingSolver.OnDrawGizmos(this);
+			_warningSolver.OnDrawGizmos(this);
 		}
 	#endif
 	}