Upstream report: https://secure.phabricator.com/T6683
That very important link/section (as discussed in T912) has a very small target area.
I suggest making the entire yellow box into a clickable link that will "Show all changes".
And increase the height of the box by 50-100%.
Otherwise too many people will miss it, the first (few) times they encounter it.
(I missed it at least once, and searched through other bugs trying to find the comment I had seen before, until I realized that it was hidden in a collapsed section. And I'm a fairly observant person!)