How to reproduce
- Create a course
- Create a notification course element
- Copy URL of course from the info page, e.g. something like this: https://community.openolat.org/auth/RepositoryEntry/187465728/
- Open notification element
- Create a notification, copy the link to the course to the notification text
- Send notfication via email
=> Link is broken
The same could also be true in any mail form, I did not check this.
This is how the generated HTML mail looks like. The actual link is replaced with "../"