Fix

Author: samsonasik

composer.json

@@ -90,7 +90,8 @@
         "classmap": [
             "stubs",
             "rules-tests/CodingStyle/Rector/Namespace_/ImportFullyQualifiedNamesRector/Source",
-            "rules-tests/Renaming/Rector/Name/RenameClassRector/Source"
+            "rules-tests/Renaming/Rector/Name/RenameClassRector/Source",
+            "rules-tests/TypeDeclaration/Rector/ClassMethod/KnownMagicClassMethodTypeRector/Source"
         ],
         "files": [
             "tests/debug_functions.php",

rules/TypeDeclaration/Rector/ClassMethod/KnownMagicClassMethodTypeRector.php

@@ -80,7 +80,7 @@ public function refactor(Node $node): ?Node
             }
 
             if ($this->parentClassMethodTypeOverrideGuard->hasParentClassMethod($classMethod)) {
-                return null;
+                continue;
             }
 
             if ($this->isNames($classMethod, [MethodName::CALL, MethodName::CALL_STATIC])) {

src/VendorLocker/ParentClassMethodTypeOverrideGuard.php

@@ -34,6 +34,7 @@ public function hasParentClassMethod(ClassMethod|MethodReflection $classMethod):
 
             return $parentClassMethod instanceof MethodReflection;
         } catch (UnresolvableClassException) {
+            dump('here');
             // we don't know all involved parents,
             // marking as parent exists which usually means the method is guarded against overrides.
             return true;