Now even that doesn't work.The only thing I can figure out is to hit the Community button at the bottom. It takes you to the most recent activity. Under the posters' names is "Scott & Wes Frog Fan Forum". So I hit that and it goes back to the original list of threads. There must be a simpler way, but haven't figured it out.
The only way I could find to get back to the topics page was the arrow at the top left of the screen. The way I hold my phone and the fact that we scroll down as we read, it makes more sense for that to be at the bottom imo.