Problem:
If a flagging user puts a (markdown) link in a flag comment, eg:
This answer is a duplicate of [another answer](some url) when viewed by a moderator in the flag queue, the another answer link is visually rendered correctly as a clickable link, but it is not clickable because the entire flag comment is itself a link to take moderator action of decline/helpful etc, which masks the inner link.
Inspecting the HTML shows that the anchor tag is actually there.
Putting a link to another post seems reasonable and helpful to me.
Request:
Make the moderator action link active only on the non-anchor-tag (if any) parts of the flag comment, allowing any embedded anchor tags to be functional.
There is an edge case when the entire comment is a link, which would leave no room for the moderator action link, but I wouldn't bother worrying about it as I have never seen in the wild and it only prevents flag-specific actions.
Work around:
As commenters have pointed out, the work around is to right-click on the embedded link and "open in new tab". I have confirmed that this works in mobile (iPhone/Chrome) too.