When updating (see (1) when creating) a comment with a markdown block supporting syntax coloration like the following diff block
-- old text
++ new text
- the "Preview" shows colors/code highlight
- after a "Submit" (and a small fading display effect), all text is gray
- need to reload the page to get colors again
Expected : the text is shown with all styling effects including syntax color/highlight
(1) similar behavior when creating an artefact : the preview do not show colors, need a submit/save first.