OKAY so SMF was sadly a bit dated. No markdown, no link previews, basic buttons disappearing in different browsers, etc.
Since we had a total of maybe 35 posts, I figured we could just give this a go for a bit and see if it's more to our liking. The SMF forum is backed up if we need to revert for any reason, but for now: Welcome back again.
We have markdown (that's me using markdown). Buttons are visible! We have link previews.
https://steamcommunity.com/groups/fungineer
Please feel free to request features. The phpBB extensions are... extensive.