When we use endpoint /rest/api/3/issue/{issueIdOrKey}/comment, we can supply expand=renderedBody and get the comments in markdown format.
When using /rest/api/3/search and specifying field=description,comment and expand=renderedFields
the description is renedered in markdown format. However, comment body is not.
What can be done to ensure description, comments and worklogs can be retrieved as markdown while calling /rest/api/3/search