Currently, when writing comments you'd need to stop writing it, attach the file or screenshot, and then add the screenshot to the comment field.

If the comment is inside a transition, you'd need to also have the 'Attachments' field in the same screen, and when previewing the comment JIRA will show a red warning saying that there isn't such attachment.

It would be very convenient if it was possibly to attach a screenshot directly into the text (using crtl/cmd+V), similarly to the capability in the Confluence editor.

This would be specially helpful as the Wiki Editor for JIRA will be bundled in the future.