Stack from with Editor

Hi,

Working with a client to create new app, and I think there is issue that looks more like a bug. otherwise I'm doing it wrong. anyway issue here is that i have a Stack form with editor (also as translatable), and the autoSaveKey is making issue here. it create unique key, but whenever new set of fields being added by Stack "Add another" button, new editor have same autoSaveKey as first editor. method I'm using is this:

        $defaultValueField = is_array($defaultValue) && isset($defaultValue['value']) ? $defaultValue['value'] : null;
        $index = preg_match('/customapp_(\d+)/', $name, $matches) ? $matches[1] : time();
        $this->valueField = new Translatable(
            "{$name}[value]",
            $defaultValueField,
            false,
            [
                'app' => 'customapp',
                'key' => $defaultValueField ?: null,
                'editor' => [
                    'app' => 'customapp',
                    'key' => 'customappwidget',
                    'autoSaveKey' => "customapp-value-{$index}-" . md5(uniqid()),
                    'minimize' => 'Enter text',
                    'autoSave' => $defaultValueField ? true : false
                ]
            ]
        );

Also tried various other methods:

'autoSaveKey' => "widget-{$this->valueField->name}-" . md5(uniqid()),

or:

'autoSaveKey' => "widget-{$this->valueField->name}-" . md5($name . microtime(true)),

And more... but just doesn't matter and while every time it create unique autoSaveKey for first editor, every new set have editor with same exact autoSaveKey from first editor.