Comment on June 2017 CU for SharePoint 2013 product family is available for download by Stefan Goßner

Hi Feytens,
the issue you are talking about was already fixed with April CU so it is not listed in the fixes in June CU.
The following KB contains the documentation of the issue:
https://support.microsoft.com/en-us/help/3178732/april-11-2017-update-for-sharepoint-foundation-2013-kb3178732
Cheers,
Stefan