Yeah, if you're on mobile, you don't see the bar on the right side of the screen that shows the 12 most recent posts. I only see them when I'm on my PC.
I have to turn my phone sideways and then you can see the recent threads on the right.
I can see the last post in each thread when I'm in the main forum directory, but the "Recent Posts" column on the right side isn't visible to me on mobile like it is on PC.