[forge:site-support:#3268]
I created 3 test posts in my Help forum and then deleted them all, making the forum empty again. Now the number of topics shown on the Discussions page is stuck at 3, even though no topics exist in the Help forum. I hoped it might fix itself but it's been like that for weeks.
Confirmed, see https://sourceforge.net/p/waveshop/discussion
Or second forum on https://sourceforge.net/p/strawhat/discussion/ (in case the user's forum sees activity and changes things)