Feedback:

• UX: I wasn't sure if Topics functioned like a forum topic, or if they were more like a hashtag that grouped related posts. Still not totally sure, to be honest. It felt strange that the list of topics and recent posts were split into two even columns—I wasn't sure which was supposed to be the main content of the page, and what I should be looking at. I also wish each Topic told me things like number of comments/sub-topics and when the last post in it was, so that I could see which Topics are active without having to open each one. Also odd that on the front page, Trending Topics lists topics that start with hashtags and ones that do not (e.g. "#humour" alongside "bonfire") which adds to my confusion of how they work and what they are. I wanted to reply to one topic, but when I hit "Reply" it said I was creating a "sub-topic" (with fields for "category" name and description) and prompted me for a title, so I wasn't sure if I was creating a comment thread/chain, or if it would create a separate sub-topic within the main topic, or how things work at in general.
• UX: Topics in general feel really weird to me. The reverse-chronological order is really off-putting, as is the lack of clarity of how replies go together. I tried replying to someone and it seemed to create an entirely different topic. It looks like these subtopics have threaded replies within them. None of this makes much sense to me at all. I did see some of the team's discussions on Matrix or something about trying to come up with a better way of having discussions, which I think is a great and admirable goal, but this current implementation is far less clear to me than any forum or comment page I've ever visited before. When I replied to someone's topic, I just ended up creating a series of sub-topics, which I then had no way of deleting.
• Tried to reply to a topic, got the error "A condition didn't receive data that matched a format it could recognise." Refreshed and tried again, and it worked.
• UX: Things feel split up in a non-intuitive way that I'm still struggling to figure out. It looks like Topics are more of a forum-type discussion where people can post about a specific subject, and the main feed is where you're meant to post about anything you want (like a Twitter or Facebook profile). However, I'm not sure how they connect, or if they do, or which one is the "main" one. Maybe that's up to the admin of the individual instance. But at this point I remain somewhat confused. Little things like my Feed and the homepage having a box for "Trending topics" when the Topics page doesn't are minor details that lead to me feeling a little los
• UX: I also find it a little weird how sometimes I'm making a "Post" and sometimes it's a "Sub-topic" — I get that it just depends on whether or nor I'm in the Topics page, but I wish there was a clearer visual differentiation. For instance, a floating textbox whenever I make a post, and a nested textbox within topics (and maybe it floats when scrolling through a topic, but maintains the width/position of the topic column so that it feels more integrated).