Print selection (detail view) from CalDAV calendar generates hundrets of pages

I discover a problem on printing appointments (print selection feature) from a caldav calendar in the current release. When the appoinments are selected and the print selection option from thew context menu is used, emclient sometimes generates hundrets of pages when selecting the detail view afterwards. The same appointments selected in another order generate the right amount of pages that should be printed. The problem affects multiple installations on different machines that try to print a selection from the same CalDAV (ownCloud) based calendar. Is there a way to get more informations like logging that enables me to understand why emclient sometimes does not work here like expected?

Thank you, kind regards
Heini Huber