Fixed blend normal distance for planar

com.unity.render-pipelines.high-definition/HDRP/Editor/Lighting/Reflection/SerializedPlanarReflectionProbe.cs

 
             overrideFieldOfView = serializedObject.Find((PlanarReflectionProbe p) => p.overrideFieldOfView);
             fieldOfViewOverride = serializedObject.Find((PlanarReflectionProbe p) => p.fieldOfViewOverride);
+
+            influenceVolume.editorSimplifiedModeBlendNormalDistance.floatValue = 0;
         }
 
 

com.unity.render-pipelines.high-definition/HDRP/Lighting/Reflection/PlanarReflectionProbe.cs

 using UnityEngine.Serialization;
 using UnityEngine.Rendering;
+using UnityEngine.Assertions;
 
 namespace UnityEngine.Experimental.Rendering.HDPipeline
 {
 
         public void OnAfterDeserialize()
         {
+            Assert.IsNotNull(influenceVolume, "influenceVolume must have an instance at this point. See HDProbe.Awake()");
             if (m_Version != currentVersion)
             {
                 // Add here data migration code
                 }
                 m_Version = currentVersion;
             }
+
+            influenceVolume.boxBlendNormalDistanceNegative = Vector3.zero;
+            influenceVolume.boxBlendNormalDistancePositive = Vector3.zero;
         }
     }
 }