I tried to add an alias containing character "|", but this fails without any notice. Clicking save simply removes the field created on edit modus. (It is possible to use this character within labels.)
It would be nice to have an error message which tells the users that this fails because this one character is not allowed.
Version: unspecified
Severity: minor
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=51811
https://bugzilla.wikimedia.org/show_bug.cgi?id=43136