Collapsing the replies to a forum post leaves some replies visible
Found another bug with forum threads while investigating #516 (closed). I started by creating five top-level posts, with four nested replies to each post. Before creating the replies to the last top-level post, I collapsed the replies to the previous top-level post. Some of the replies were left visible at the bottom of the view, below the last top-level post (see screenshot).
Expanding and collapsing the top-level post did not solve the issue.