Sure, but parts of the ticket are editable. I can change the title and various fields, and everything gets versioned. But they've elected to not provide an edit

Sure, but parts of the ticket are editable. I can change the title and various fields, and everything gets versioned. But they've elected to not provide an editable description field, and instead, all clarification must be in append-only, immutable comments. This seems like an arbitrary limitation.