This is part bug report, part priority feature request.
The invisible OP bug seems to still be lurking in the shadows: this thread currently reads blank, and is not listed in the subforum even though it's listed on the main forum page.
I also ran into a glitch where my post in this thread is likewise invisible. It displays on the front page, and you can see the thread has three numbered posts, but the reply itself is absent.
The errors may be related to editing a post after preview: my post above was tweaked, while my two other forum posts today were not revised before final submission; it may also be a result of misclicking 'Edit' on the post itself rather than 'Edit' on the left-hand side: the latter links to '/reedit', but the former links to '/edit'. (I'm wondering if forum replies can be brought in line with the comment boxes elsewhere, where the full editor is embedded in the page, rather than needing this intermediary step.)
The Request
Since site activity has spiked, I'll push a request I've been sitting on for a while: forum thread notifications. Currently you're only notified if a thread you've posted/replied to has updated if you're tagged in the text, meaning I have to comb the board manually if the 'Latest Active' widget has updated all five slots. Before April, this wasn't a big deal since it was fairly low activity, but with a specific eye to the new users who may not even be aware they're missing updates, I believe implementing some sort of thread subscription system a priority feature.