It would be great if you could add an "@" to the participant letter filtering. As in the glossary, you should be able to find all users whose name starts with something other than a-z, like "Österreicher" or "Åkerlund" under "@".
With this improvement we would not have such names incorrectly under "O" and "A" or not a separate filter for each Umlaut, etc.
- has been marked as being related by
MDL-68745 Only able to filter course participants by first and last initial in languages using A-Z alphabet