I originally had this as part of #582767+, but noticed that my fix for that didn't fix commit comments. Turns out they now use a Vue app which happens to suffer from the same bug as `deprecated_notes.js`, which used to render commit comments too. https://gitlab.com/gitlab-org/gitlab/-/commit/74f4593a510af4a7af228a674e6c2a56756452f3#note_3161349282: > {width=549 height=600} (The PlantUML diagram is entirely handled on the backend, so it works, but the Mermaid one is done on the frontend, and doesn't.)