Dumb 1AM post, here we go if this is in the wrong category, please feel free to move it.
Some of you may already have figured this out, but I've seen a number of posts recently saying they couldn't edit their original post. I just ran into this bug and managed to figure it out, so I thought I'd share in case it helps someone out there.
Click edit (at the bottom of your post or the orange pencil > edit post), nothing happens. No area appears for you to edit your post.
Reply to the topic as though you're about to create a new post, then click the edit button. You should now see in the top left corner of the draft box that you're editing your post rather than replying to the topic.
However, as you can see, your post won't appear in the draft box. Unfortunately, you'll need to copy your post and stick it in there. Once you've done that and edited the post to your hearts content, save the edit. Viola, your edit is saved.
The topic featured in this post, and the proof that this worked, is here: Qemu-base & Qemu-desktop conflicting dependencies - #11 by lum1nuss
Hope this helps, especially for the forum mods here who have to clean up our newb mess. ^^ Hopefully there will be a better solution in the future too, or the bug just stops happening. That'd be ideal hahaha