diff --git a/src/Type/ObjectType.php b/src/Type/ObjectType.php
index aac86ee18..efd902c28 100644
--- a/src/Type/ObjectType.php
+++ b/src/Type/ObjectType.php
@@ -1129,14 +1129,14 @@ public function hasOffsetValueType(Type $offsetType): TrinaryLogic
 
 	public function getOffsetValueType(Type $offsetType): Type
 	{
-		if (!$this->isExtraOffsetAccessibleClass()->no()) {
-			return new MixedType();
-		}
-
 		if ($this->isInstanceOf(ArrayAccess::class)->yes()) {
 			return RecursionGuard::run($this, fn (): Type => ParametersAcceptorSelector::selectSingle($this->getMethod('offsetGet', new OutOfClassScope())->getVariants())->getReturnType());
 		}
 
+		if (!$this->isExtraOffsetAccessibleClass()->no()) {
+			return new MixedType();
+		}
+
 		return new ErrorType();
 	}
 
diff --git a/tests/PHPStan/Analyser/NodeScopeResolverTest.php b/tests/PHPStan/Analyser/NodeScopeResolverTest.php
index 0a9424b19..7b11ad16c 100644
--- a/tests/PHPStan/Analyser/NodeScopeResolverTest.php
+++ b/tests/PHPStan/Analyser/NodeScopeResolverTest.php
@@ -1433,6 +1433,7 @@ public function dataFileAsserts(): iterable
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/bug-9123.php');
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/bug-10037.php');
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/set-type-type-specifying.php');
+		yield from $this->gatherAssertTypes(__DIR__ . '/data/bug-9456.php');
 	}
 
 	/**
diff --git a/tests/PHPStan/Analyser/data/bug-9456.php b/tests/PHPStan/Analyser/data/bug-9456.php
new file mode 100644
index 000000000..2d6b77821
--- /dev/null
+++ b/tests/PHPStan/Analyser/data/bug-9456.php
@@ -0,0 +1,67 @@
+<?php declare(strict_types = 1);
+
+namespace Bug9456;
+
+use function PHPStan\Testing\assertType;
+use ArrayAccess;
+
+/**
+ * @template TKey of array-key
+ * @template TValue of mixed
+ *
+ * @implements ArrayAccess<TKey, TValue>
+ */
+class Collection implements ArrayAccess {
+	/**
+     * @param (callable(TValue, TKey): bool)|TValue|string $key
+     * @param TValue|string|null $operator
+     * @param TValue|null $value
+     * @return static<int<0, 1>, static<TKey, TValue>>
+     */
+    public function partition($key, $operator = null, $value = null) {} // @phpstan-ignore-line
+
+    /**
+     * @param TKey $key
+     * @return TValue
+     */
+    public function offsetGet($key): mixed { return null; } // @phpstan-ignore-line
+
+	/**
+     * @param TKey $key
+     * @return bool
+     */
+    public function offsetExists($key): bool { return true; }
+
+	/**
+     * @param TKey|null $key
+     * @param TValue $value
+     * @return void
+     */
+    public function offsetSet($key, $value): void {}
+
+    /**
+     * @param TKey $key
+     * @return void
+     */
+    public function offsetUnset($key): void {}
+
+	/**
+	 * @param Collection<int, string> $collection
+	 */
+	public function sayHello(Collection $collection): void
+	{
+		$result = $collection->partition('key');
+
+		assertType(
+			'Bug9456\Collection<int<0, 1>, Bug9456\Collection<int, string>>',
+			$result
+		);
+		assertType('Bug9456\Collection<int, string>', $result[0]);
+		assertType('Bug9456\Collection<int, string>', $result[1]);
+
+		[$one, $two] = $collection->partition('key');
+
+		assertType('Bug9456\Collection<int, string>', $one);
+		assertType('Bug9456\Collection<int, string>', $two);
+	}
+}
diff --git a/tests/PHPStan/Rules/Operators/InvalidComparisonOperationRuleTest.php b/tests/PHPStan/Rules/Operators/InvalidComparisonOperationRuleTest.php
index 3221658bc..5536341f9 100644
--- a/tests/PHPStan/Rules/Operators/InvalidComparisonOperationRuleTest.php
+++ b/tests/PHPStan/Rules/Operators/InvalidComparisonOperationRuleTest.php
@@ -168,4 +168,10 @@ public function testRuleWithNullsafeVariant(): void
 		]);
 	}
 
+
+	public function testRuleWithSimpleXml(): void
+	{
+		$this->analyse([__DIR__ . '/data/bug-9456-xml.php'], []);
+	}
+
 }
diff --git a/tests/PHPStan/Rules/Operators/data/bug-9456-xml.php b/tests/PHPStan/Rules/Operators/data/bug-9456-xml.php
new file mode 100644
index 000000000..6432a3a77
--- /dev/null
+++ b/tests/PHPStan/Rules/Operators/data/bug-9456-xml.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Bug9456Xml;
+
+use SimpleXMLElement;
+
+/**
+ * @param SimpleXMLElement $xml
+ */
+function simplexml($xml): void
+{
+	if (isset($xml->modules)) {
+		foreach ($xml->modules->module as $data) {
+			/** @var SimpleXMLElement $data */
+			$attributes = $data->attributes();
+			$install = ($attributes['install'] == 1) ? true : false;
+		}
+	}
+}