diff --git a/src/Extension/CoreExtension.php b/src/Extension/CoreExtension.php
index 01bb22505..12bca1065 100644
--- a/src/Extension/CoreExtension.php
+++ b/src/Extension/CoreExtension.php
@@ -1954,7 +1954,6 @@ final class CoreExtension extends AbstractExtension
         }
 
         if ($isSandboxed) {
-            // $isSandboxed is computed against the call-site source, so check the policy directly to honor that decision.
             $policy = $env->getExtension(SandboxExtension::class)->getChecker()->getSecurityPolicy();
             foreach ($array as $item) {
                 if (\is_object($item)) {
diff --git a/src/Extension/SandboxExtension.php b/src/Extension/SandboxExtension.php
index 090fb2f29..865b205d1 100644
--- a/src/Extension/SandboxExtension.php
+++ b/src/Extension/SandboxExtension.php
@@ -45,9 +45,9 @@ final class SandboxExtension extends AbstractExtension
         return $this->checker;
     }
 
-    public function isSandboxed(?Source $source = null): bool
+    public function isSandboxed(): bool
     {
-        return $this->checker->isSandboxed($source);
+        return $this->checker->isSandboxed();
     }
 
     public function setSecurityPolicy(SecurityPolicyInterface $policy): void
@@ -60,7 +60,7 @@ final class SandboxExtension extends AbstractExtension
         return $this->checker->getSecurityPolicy();
     }
 
-    public function checkSecurity($tags, $filters, $functions, $tests = [], ?Source $source = null): void
+    public function checkSecurity($tags, $filters, $functions, array $tests, Source $source): void
     {
         $this->checker->checkSecurity($tags, $filters, $functions, $tests, $source);
     }
diff --git a/src/Node/CheckSecurityNode.php b/src/Node/CheckSecurityNode.php
index 1f67cfce2..673b386b4 100644
--- a/src/Node/CheckSecurityNode.php
+++ b/src/Node/CheckSecurityNode.php
@@ -47,7 +47,7 @@ class CheckSecurityNode extends Node
                 ->write("protected function checkTraitsAllowed(): void\n")
                 ->write("{\n")
                 ->indent()
-                ->write("if (!\$this->sandbox->isSandboxed(\$this->source)) {\n")
+                ->write("if (!\$this->sandbox->isSandboxed()) {\n")
                 ->indent()
                 ->write("return;\n")
                 ->outdent()
@@ -72,7 +72,7 @@ class CheckSecurityNode extends Node
             ->write("public function ensureSecurityChecked(): void\n")
             ->write("{\n")
             ->indent()
-            ->write("if (\$this->sandbox->isSandboxed(\$this->source)) {\n")
+            ->write("if (\$this->sandbox->isSandboxed()) {\n")
             ->indent()
             ->write("\$this->checkSecurity();\n")
             ->outdent()
diff --git a/src/Node/Expression/Binary/HasEveryBinary.php b/src/Node/Expression/Binary/HasEveryBinary.php
index 5082ae5f4..2ca70263f 100644
--- a/src/Node/Expression/Binary/HasEveryBinary.php
+++ b/src/Node/Expression/Binary/HasEveryBinary.php
@@ -23,7 +23,7 @@ class HasEveryBinary extends AbstractBinary implements ReturnBoolInterface
             ->subcompile($this->getNode('left'))
             ->raw(', ')
             ->subcompile($this->getNode('right'))
-            ->raw(', $this->env->hasExtension(\Twig\Extension\SandboxExtension::class) && $this->env->getExtension(\Twig\Extension\SandboxExtension::class)->getChecker()->isSandboxed($this->source))')
+            ->raw(', $this->env->hasExtension(\Twig\Extension\SandboxExtension::class) && $this->env->getExtension(\Twig\Extension\SandboxExtension::class)->getChecker()->isSandboxed())')
         ;
     }
 
diff --git a/src/Node/Expression/Binary/HasSomeBinary.php b/src/Node/Expression/Binary/HasSomeBinary.php
index 739e5a3ed..bd4be527d 100644
--- a/src/Node/Expression/Binary/HasSomeBinary.php
+++ b/src/Node/Expression/Binary/HasSomeBinary.php
@@ -23,7 +23,7 @@ class HasSomeBinary extends AbstractBinary implements ReturnBoolInterface
             ->subcompile($this->getNode('left'))
             ->raw(', ')
             ->subcompile($this->getNode('right'))
-            ->raw(', $this->env->hasExtension(\Twig\Extension\SandboxExtension::class) && $this->env->getExtension(\Twig\Extension\SandboxExtension::class)->getChecker()->isSandboxed($this->source))')
+            ->raw(', $this->env->hasExtension(\Twig\Extension\SandboxExtension::class) && $this->env->getExtension(\Twig\Extension\SandboxExtension::class)->getChecker()->isSandboxed())')
         ;
     }
 
diff --git a/src/Node/Expression/CallExpression.php b/src/Node/Expression/CallExpression.php
index 6a9a78c1a..c48240978 100644
--- a/src/Node/Expression/CallExpression.php
+++ b/src/Node/Expression/CallExpression.php
@@ -94,7 +94,7 @@ abstract class CallExpression extends AbstractExpression
             if (!$first) {
                 $compiler->raw(', ');
             }
-            $compiler->raw('$this->env->hasExtension(\Twig\Extension\SandboxExtension::class) && $this->env->getExtension(\Twig\Extension\SandboxExtension::class)->getChecker()->isSandboxed($this->source)');
+            $compiler->raw('$this->env->hasExtension(\Twig\Extension\SandboxExtension::class) && $this->env->getExtension(\Twig\Extension\SandboxExtension::class)->getChecker()->isSandboxed()');
             $first = false;
         }
 
diff --git a/src/Sandbox/SecurityChecker.php b/src/Sandbox/SecurityChecker.php
index abb898363..0659a64e3 100644
--- a/src/Sandbox/SecurityChecker.php
+++ b/src/Sandbox/SecurityChecker.php
@@ -32,7 +32,7 @@ final class SecurityChecker
     ) {
     }
 
-    public function isSandboxed(?Source $source = null): bool
+    public function isSandboxed(): bool
     {
         return $this->sandboxed;
     }
@@ -47,9 +47,9 @@ final class SecurityChecker
         return $this->policy;
     }
 
-    public function checkSecurity(array $tags, array $filters, array $functions, array $tests, ?Source $source): void
+    public function checkSecurity(array $tags, array $filters, array $functions, array $tests, Source $source): void
     {
-        if (!$this->isSandboxed($source)) {
+        if (!$this->isSandboxed()) {
             return;
         }
 
@@ -64,7 +64,7 @@ final class SecurityChecker
 
     public function checkMethodAllowed(mixed $obj, mixed $method, int $lineno = -1, ?Source $source = null): void
     {
-        if ($this->isSandboxed($source)) {
+        if ($this->isSandboxed()) {
             try {
                 $this->policy->checkMethodAllowed($obj, $method);
             } catch (SecurityNotAllowedMethodError $e) {
@@ -78,7 +78,7 @@ final class SecurityChecker
 
     public function checkPropertyAllowed(mixed $obj, mixed $property, int $lineno = -1, ?Source $source = null): void
     {
-        if ($this->isSandboxed($source)) {
+        if ($this->isSandboxed()) {
             try {
                 $this->policy->checkPropertyAllowed($obj, $property);
             } catch (SecurityNotAllowedPropertyError $e) {
@@ -124,7 +124,7 @@ final class SecurityChecker
             return $obj;
         }
 
-        if (!$this->isSandboxed($source)) {
+        if (!$this->isSandboxed()) {
             return $obj;
         }
 
diff --git a/tests/Node/Expression/FilterTest.php b/tests/Node/Expression/FilterTest.php
index 7c0d5bbbe..7313a34b6 100644
--- a/tests/Node/Expression/FilterTest.php
+++ b/tests/Node/Expression/FilterTest.php
@@ -89,11 +89,11 @@ class FilterTest extends NodeTestCase
 
         // needs sandbox
         $node = self::createFilter($environment, $string, 'bar_sandbox');
-        $tests[] = [$node, 'Twig\Tests\Node\Expression\twig_tests_filter_sandbox($this->env->hasExtension(\Twig\Extension\SandboxExtension::class) && $this->env->getExtension(\Twig\Extension\SandboxExtension::class)->getChecker()->isSandboxed($this->source), "abc")', $environment];
+        $tests[] = [$node, 'Twig\Tests\Node\Expression\twig_tests_filter_sandbox($this->env->hasExtension(\Twig\Extension\SandboxExtension::class) && $this->env->getExtension(\Twig\Extension\SandboxExtension::class)->getChecker()->isSandboxed(), "abc")', $environment];
 
         // needs charset, environment, context, and sandbox
         $node = self::createFilter($environment, $string, 'bar_all');
-        $tests[] = [$node, 'Twig\Tests\Node\Expression\twig_tests_filter_all($this->env->getCharset(), $this->env, $context, $this->env->hasExtension(\Twig\Extension\SandboxExtension::class) && $this->env->getExtension(\Twig\Extension\SandboxExtension::class)->getChecker()->isSandboxed($this->source), "abc")', $environment];
+        $tests[] = [$node, 'Twig\Tests\Node\Expression\twig_tests_filter_all($this->env->getCharset(), $this->env, $context, $this->env->hasExtension(\Twig\Extension\SandboxExtension::class) && $this->env->getExtension(\Twig\Extension\SandboxExtension::class)->getChecker()->isSandboxed(), "abc")', $environment];
 
         // needs environment
         $node = self::createFilter($environment, $string, 'bar');