Visio Services Screen tip on shapes in Sharepoint Office 365

[Henke]

Hello!
I would like to be able to view the screentips on shapes when viewing a  VDW uploaded and added as webpart using Visio Services.

The shape has screentip in visio.
Saved it as VDW.

I have an Office 365 E3 subscription
Enabled the Visio services for Sharepoint
Added the Visio Web part to a page in the site
Upload and added the VDW file in question that has Screentip in Visio.

Also I have added the User.visEquivTitle to the Shapesheet of the shape. The value set to Comment as described for the HTML output of a screentip.
Described here: https://social.technet.microsoft.com/Forums/office/en-US/c7b23af1-6868-4912-8fcd-b9368fd3b94b/visio-2013-how-to-add-text-popups-screentips-on-shapes-when-viewed-as-a-web-page?forum=visiogeneral

If I save as HTML I can view screentips in that output, but only up to the 60 chars.
I was hoping using Visio Services in Sharepoint would enable to view the full screentip up to the 256 chars out of the box, but that does not seem to be the case.
Does anybody have a guide  on how to get screentips to be viewable in Visio Services on Sharepoint Office 365?