diff --git a/packages/VendorLocker/NodeVendorLocker/ClassMethodReturnVendorLockResolver.php b/packages/VendorLocker/NodeVendorLocker/ClassMethodReturnVendorLockResolver.php
index bc1e38b51e5a..92751d1cd277 100644
--- a/packages/VendorLocker/NodeVendorLocker/ClassMethodReturnVendorLockResolver.php
+++ b/packages/VendorLocker/NodeVendorLocker/ClassMethodReturnVendorLockResolver.php
@@ -11,16 +11,10 @@
 use PHPStan\Type\MixedType;
 use Rector\NodeNameResolver\NodeNameResolver;
 use Rector\NodeTypeResolver\Node\AttributeKey;
-use Rector\VendorLocker\Reflection\ClassReflectionAncestorAnalyzer;
 use Rector\VendorLocker\Reflection\MethodReflectionContractAnalyzer;
 
 final class ClassMethodReturnVendorLockResolver
 {
-    /**
-     * @var ClassReflectionAncestorAnalyzer
-     */
-    private $classReflectionAncestorAnalyzer;
-
     /**
      * @var MethodReflectionContractAnalyzer
      */
@@ -32,11 +26,9 @@ final class ClassMethodReturnVendorLockResolver
     private $nodeNameResolver;
 
     public function __construct(
-        ClassReflectionAncestorAnalyzer $classReflectionAncestorAnalyzer,
         MethodReflectionContractAnalyzer $methodReflectionContractAnalyzer,
         NodeNameResolver $nodeNameResolver
     ) {
-        $this->classReflectionAncestorAnalyzer = $classReflectionAncestorAnalyzer;
         $this->methodReflectionContractAnalyzer = $methodReflectionContractAnalyzer;
         $this->nodeNameResolver = $nodeNameResolver;
     }
@@ -53,7 +45,7 @@ public function isVendorLocked(ClassMethod $classMethod): bool
             return false;
         }
 
-        if (! $this->classReflectionAncestorAnalyzer->hasAncestors($classReflection)) {
+        if (count($classReflection->getAncestors()) === 1) {
             return false;
         }
 
diff --git a/packages/VendorLocker/NodeVendorLocker/PropertyTypeVendorLockResolver.php b/packages/VendorLocker/NodeVendorLocker/PropertyTypeVendorLockResolver.php
index ab8bcf384a57..91bf4932ef4e 100644
--- a/packages/VendorLocker/NodeVendorLocker/PropertyTypeVendorLockResolver.php
+++ b/packages/VendorLocker/NodeVendorLocker/PropertyTypeVendorLockResolver.php
@@ -10,15 +10,9 @@
 use Rector\FamilyTree\Reflection\FamilyRelationsAnalyzer;
 use Rector\NodeNameResolver\NodeNameResolver;
 use Rector\NodeTypeResolver\Node\AttributeKey;
-use Rector\VendorLocker\Reflection\ClassReflectionAncestorAnalyzer;
 
 final class PropertyTypeVendorLockResolver
 {
-    /**
-     * @var ClassReflectionAncestorAnalyzer
-     */
-    private $classReflectionAncestorAnalyzer;
-
     /**
      * @var NodeNameResolver
      */
@@ -30,11 +24,9 @@ final class PropertyTypeVendorLockResolver
     private $familyRelationsAnalyzer;
 
     public function __construct(
-        ClassReflectionAncestorAnalyzer $classReflectionAncestorAnalyzer,
         NodeNameResolver $nodeNameResolver,
         FamilyRelationsAnalyzer $familyRelationsAnalyzer
     ) {
-        $this->classReflectionAncestorAnalyzer = $classReflectionAncestorAnalyzer;
         $this->nodeNameResolver = $nodeNameResolver;
         $this->familyRelationsAnalyzer = $familyRelationsAnalyzer;
     }
@@ -49,7 +41,7 @@ public function isVendorLocked(Property $property): bool
             return false;
         }
 
-        if (! $this->classReflectionAncestorAnalyzer->hasAncestors($classReflection)) {
+        if (count($classReflection->getAncestors()) === 1) {
             return false;
         }
 
diff --git a/packages/VendorLocker/Reflection/ClassReflectionAncestorAnalyzer.php b/packages/VendorLocker/Reflection/ClassReflectionAncestorAnalyzer.php
deleted file mode 100644
index 50440b7db471..000000000000
--- a/packages/VendorLocker/Reflection/ClassReflectionAncestorAnalyzer.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Rector\VendorLocker\Reflection;
-
-use PHPStan\Reflection\ClassReflection;
-
-final class ClassReflectionAncestorAnalyzer
-{
-    public function hasAncestors(ClassReflection $classReflection): bool
-    {
-        return $classReflection->getAncestors() !== [$classReflection];
-    }
-}
diff --git a/rules-tests/TypeDeclaration/Rector/FunctionLike/ReturnTypeDeclarationRector/Fixture/skip_already_set_return_type.php.inc b/rules-tests/TypeDeclaration/Rector/FunctionLike/ReturnTypeDeclarationRector/Fixture/skip_already_set_return_type.php.inc
new file mode 100644
index 000000000000..585c6195aa95
--- /dev/null
+++ b/rules-tests/TypeDeclaration/Rector/FunctionLike/ReturnTypeDeclarationRector/Fixture/skip_already_set_return_type.php.inc
@@ -0,0 +1,21 @@
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\FunctionLike\ReturnTypeDeclarationRector\Fixture;
+
+use PhpParser\Node\Expr\FuncCall;
+use PhpParser\Node\Name;
+
+abstract class ParentReturnType
+{
+    public function run(): ?\PhpParser\Node
+    {
+    }
+}
+
+final class SkipAlreadySetReturnType extends ParentReturnType
+{
+    public function run(): ?\PhpParser\Node
+    {
+        return new FuncCall(new Name('some'));
+    }
+}
diff --git a/rules/CodeQualityStrict/Rector/If_/MoveOutMethodCallInsideIfConditionRector.php b/rules/CodeQualityStrict/Rector/If_/MoveOutMethodCallInsideIfConditionRector.php
index 98f3266372f9..6038547798ab 100644
--- a/rules/CodeQualityStrict/Rector/If_/MoveOutMethodCallInsideIfConditionRector.php
+++ b/rules/CodeQualityStrict/Rector/If_/MoveOutMethodCallInsideIfConditionRector.php
@@ -162,10 +162,11 @@ private function isInsideMethodCallHasMethodCall(MethodCall $methodCall): bool
 
     private function isVariableNameAlreadyDefined(If_ $if, string $variableName): bool
     {
-        /** @var Scope $scope */
         $scope = $if->getAttribute(AttributeKey::SCOPE);
+        if (! $scope instanceof Scope) {
+            return false;
+        }
 
-        return $scope->hasVariableType($variableName)
-            ->yes();
+        return $scope->hasVariableType($variableName)->yes();
     }
 }