Watching topics I don't even know about

Now and then I am randomly watching topic, some I haven’t even seen before, i get counts of reply’s from a topic that said I was watching it, when I never asked too.

that happens to me

it says i was watching this topic

...yet i don't remember doing that

I think this is a glitch somewhat referring to bookmarking

it's not a glitch. You can watch categories, and automatically watch new topics in a category. To change your settings, either go to that category and click on the bell in the top right corner, next to the create topic button. You can also go to your preferences and go to categories and there you can see which categories you're watching/tracking/muted/watching first post. I set all categories to watching first post.