Some tags are automatically calculated during publishing, which means the limitations on tags (cannot start with special characters) bleeds into those properties, which I do not believe is desired or necessary.

In my case I am creating a new language contribution, and I'd like the human-readable label (set via the first alias) to start with an @. This works fine when installing locally, but publishing is blocked due to the automatic tag injection.

Several workarounds are possible but you could:

• allow the user to override the tags entirely
• allow the user to remove an autogenerated tag
• automatically clean offending tags, rather than disallowing them, either by removing the tag or just removing the offending character