Renderer not available in custom fields
While available in the administration setting to be set on e.g. the Summary and Description fields, the renderer is not available to be selected for custom fields. I don't see a reason why it shouldn't be possible to select it for all multi-line text fields?
We have custom fields for entering the environment dsecription for a particular issue and having to use two renderers (both wiki and markdown) will unfortunately make us switch to the former, even though we like markdown more.