diff --git a/tests/PHPStan/Rules/Functions/CallToFunctionParametersRuleTest.php b/tests/PHPStan/Rules/Functions/CallToFunctionParametersRuleTest.php
index 4beb131a6b..c35966b09f 100644
--- a/tests/PHPStan/Rules/Functions/CallToFunctionParametersRuleTest.php
+++ b/tests/PHPStan/Rules/Functions/CallToFunctionParametersRuleTest.php
@@ -1742,6 +1742,12 @@ public function testNoNamedArguments(): void
 		]);
 	}
 
+	public function testBug11056(): void
+	{
+		$this->checkExplicitMixed = true;
+		$this->analyse([__DIR__ . '/data/bug-11056.php'], []);
+	}
+
 	public function testBug11506(): void
 	{
 		$this->analyse([__DIR__ . '/data/bug-11506.php'], []);
diff --git a/tests/PHPStan/Rules/Functions/data/bug-11056.php b/tests/PHPStan/Rules/Functions/data/bug-11056.php
new file mode 100644
index 0000000000..6c4b8abea1
--- /dev/null
+++ b/tests/PHPStan/Rules/Functions/data/bug-11056.php
@@ -0,0 +1,59 @@
+<?php declare(strict_types = 1);
+
+namespace Bug11056;
+
+interface Item {}
+class A implements Item {}
+class B implements Item {}
+class C implements Item {}
+
+/**
+ * @template T
+ * @param class-string<T>|string $class
+ * @return ($class is class-string<T> ? T : mixed)
+ */
+function createA(string $class) {
+	return new $class();
+}
+
+/**
+ * @template T
+ * @param class-string<T> $class
+ * @return T
+ */
+function createB(string $class) {
+	return new $class();
+}
+
+/**
+ * @param Item[] $values
+ */
+function receive(array $values): void { }
+
+receive(
+	array_map(
+		createA(...),
+		[ A::class, B::class, C::class ]
+	)
+);
+
+receive(
+	array_map(
+		createB(...),
+		[ A::class, B::class, C::class ]
+	)
+);
+
+receive(
+	array_map(
+		static fn($val) => createA($val),
+		[ A::class, B::class, C::class ]
+	)
+);
+
+receive(
+	array_map(
+		static fn($val) => createB($val),
+		[ A::class, B::class, C::class ]
+	)
+);