a screenshot of the Fedilab UI showing three toots all with hashtags at the end of the toot, demonstrating the inconsistent behaviour of the new "highlight bottom hashtags feature" The first toot has a normal hashtag at the end of a line of text followed by a highlighted hashtag. the second toot has a bottom hashtag, but no extra newline between it and the text, so isn't highlighted. The final toot has a single clearly highlighted hashtag.
https://cdn.fosstodon.org/media_attachments/files/114/669/178/103/591/607/original/6e05ed8cb914cf04.png