Neos 3.3.6 - property not editable for page

Hi there,

after updating Neos to 3.3.6 I noticed that the aloha editor for my pageType property is not working anymore.

<neos:contentElement.wrap node="{document}">
    {neos:contentElement.editable(property: 'headline', tag: 'h1')}
    {neos:contentElement.editable(property: 'description')}

If I click on the textarea the aloha editor is not opening. Could someone tell me how to re-enable it for this property?

Thanks in advance,