We recently upgraded a self hosted Nextcloud to 18.04 and while everything work fine, the invitation email messages sent upon creating a calendar appointment are completely messed up.
This only happens if the appointment is generated inside Nextcloud; when creating an appointment from a Caldav-connected Thunderbird / iOS calendar the message is fine. Anyone experienced the same?
Thanks! Could you please open an issue on https://github.com/nextcloud/server with all required information and the message source (with personal information filtered)?