diff --git a/src/Nethermind/Nethermind.Core/Collections/ArrayListCore.cs b/src/Nethermind/Nethermind.Core/Collections/ArrayListCore.cs
index 00b95e683953..518fb7512842 100644
--- a/src/Nethermind/Nethermind.Core/Collections/ArrayListCore.cs
+++ b/src/Nethermind/Nethermind.Core/Collections/ArrayListCore.cs
@@ -51,6 +51,15 @@ public static void ClearToCount(T[] array, int count)
         }
     }
 
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private static void ClearTail(T[] array, int newCount, int oldCount)
+    {
+        if (RuntimeHelpers.IsReferenceOrContainsReferences<T>() && newCount < oldCount)
+        {
+            Array.Clear(array, newCount, oldCount - newCount);
+        }
+    }
+
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static void Add(
         ArrayPool<T> pool,
@@ -108,9 +117,9 @@ public static void ReduceCount(
             ClearToCount(oldArray, oldCount);
             pool.Return(oldArray);
         }
-        else if (RuntimeHelpers.IsReferenceOrContainsReferences<T>())
+        else
         {
-            Array.Clear(array, newCount, oldCount - newCount);
+            ClearTail(array, newCount, oldCount);
         }
 
         [DoesNotReturn]
@@ -228,6 +237,7 @@ public static void Insert(
     public static void Truncate(int newLength, T[] array, ref int count)
     {
         GuardIndex(newLength, count, shouldThrow: true, allowEqualToCount: true);
+        ClearTail(array, newLength, count);
         count = newLength;
     }