Fixed tristate inputs (used for permissions input)

src/Form/Permissions/PermissionType.php

@@ -97,6 +97,9 @@ class PermissionType extends AbstractType
                 'mapped' => false,
                 'label' => $operation['label'] ?? null,
                 'disabled' => $options['disabled'],
+                'label_attr' => [
+                    'class' => 'checkbox-inline opacity-100',
+                ],
             ]);
         }
 

src/Form/Type/TriStateCheckboxType.php

@@ -174,6 +174,7 @@ final class TriStateCheckboxType extends AbstractType implements DataTransformer
             case '':
                 return false;
             case 'indeterminate':
+            case 'null':
                 return null;
             default:
                 throw new InvalidArgumentException('Invalid value encountered!: '.$value);