Very strange thing is happening on my Flatboard install and also here on this forum. I can post new questions or topics, and the editor window comes and everything works normally. But when I click reply this URL which I tested from my forum will be shown:

 view.php/topic/2023-07-14214128e45f4/p/1#replyform

But there is no editor window is anywhere to be found. Tired it in several browsers, and different user accounts. It just shows the post, with no place to enter a reply. I thought maybe it was something wrong with my particular install, but the same exact thing happens on this forum also when try to reply to any forum posts.

Figured it out, you have to first click on your user name that says Welcome back. Then the editor window shows up. A little different than anything I've ever used but now it makes sense. Found this in a video that Fred shared on YouTube, which was better than a thousand words. lol

Here's a simple edit you can do to make the reply box stand out a little more on your forum: https://flatboard.org/view.php/topic/2023-08-1703222437ff9