SUMMARY I receive an invitation email and kmail shows the different buttons like "accept", "tentative", "decline", ... When I click "decline" I get a dialog to enter some text, but after clicking OK, I get an error dialog: "Error: Could not find incidence to delete." SOFTWARE/OS VERSIONS openSuse 15.0 KMail Version 5.11.80 beta KDE Frameworks 5.60.0 Qt 5.13.0 (built against 5.13.0) The xcb windowing system