Powerpoint 2016 Notes view forcing a check out

Hi,

We are using SharePoint 2013 where documents are not forced to be checked out. However, when editing a Powerpoint 2016 document in the Notes Page view we receive the message 'Edits made in this view will be lost when saved to the server. Use Save As to create a copy and make changes' or the document is automatically checked out in order for Notes to be added. This only happens when editing the document in the native PowerPoint application. If we edit the document in the PowerPoint Web App then it is fine. Is this standard behaviour for PowerPoint 2016 and SharePoint 2013?

Thanks.