SID autocomplete
The SID autocomplete method in PermissionController uses Map<String, Long> to return "names" mapped to their AclSid#id field. This means that if two entries use the same "name" (client.getTitle(), role.getAuthority(), sysGroup.getGroupTag(), ...) the only the last one will be included in the Map.
It would be better if the map returned was Map<Long, String>, mapping AclSid#id to a "name" since id is guaranteed to be unique.
A new UI ticket needs to be created to respect this change.
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