I had a quick look at the beta 3 version and encountered a problem. Each of the quick search links (Posted, New, Active and Unanswered) seem to return no more than a single item, regardless of how many posts should actually be displayed.
You're right. This bug has been introduced during the switch to the new templating system.
I've fixed it here: https://github.com/featherbb/featherbb/commit/40a8e4017e6bf031286275d850d2a870bb05dc1e
[ Generated in 0.043538 seconds, 6 queries executed - Memory usage: 1.41 MiB (Peak: 1.45 MiB) ]