Calendar sharing does not work since upgrade to 10.0

This was also reported in Calendar/contact sync problem but the user havn’t managed to create a new bugreport as requested there. So please create a new bugreport at GitHub · Where software is built

This was also reported in Kalenderfreigabe nicht mehr möglich? but the users havn’t managed to create a new bugreport as requested there. So please also create a new bugreport at GitHub · Where software is built

Both are issues where we users in here can’t help with. And if none of you having this issues are reporting them to the developers the issues stays unfixed.