Permissions by field triggers warning

Can confirm this on 3.0.3

Taking a deeper look I think there must be a change in return values somewhere? The code does not look like it could work as the return values that get checked are not keyed with 'value' but target_id.

The code in question is this one

            case 'shared':  //allow if user shares a value is in this field

                $user = User::load(\Drupal::currentUser()->id());
                $user_field = $config->getExtra();
                $user_field_values =  $user->get($user_field)->getValue();

                foreach($node_field_value as $value){
                    foreach($user_field_values as $uvalue){
>>>                    if($value['value'] == $uvalue['value'] ){
                            $control_entity = $user;
                            $grant_access_read = $config_bool_read ? true : false;
                            $grant_access_update = $config_bool_update ? true : false;
                            $grant_access_delete = $config_bool_delete ? true : false;
                            break;
                        }
                    }
                }
                break;

The arrays $node_field_value and $user_field_values look like this

$node_field_value
Array
(
    [0] => Array
        (
            [target_id] => 26
        )

)

$user_field_values
Array
(
    [0] => Array
        (
            [target_id] => 25
        )

    [1] => Array
        (
            [target_id] => 26
        )

)

Also the module is basically unusable with this error so setting this to critical.

There is now a MR to fix this.

It's only changing the index value to target_id if you want to quick fix this in your install. See the code block marked with >>> above.