sorry for late reply.
But I set the guest can access topic. Just not available the posts only.
I can see the post teaser in category page. Just no shown in categories page only.
Then, sorry to late for provide my nodebb informations:
version: 1.17.0
Node ver: v14.17.2
git hash: 6b4ef46eadce177d51b609bf75df8acdaab61f0a