@baris Thank you

@julian I found the category notifications plugin earlier today and I think it's going to be quite useful for our users so I'm glad that it exists!

Will offer my way of fixing.. probably something went wrong in the themes, aside from css, probably version mismatches with the core nodebb version your using. The below will revert to working vanilla and lavender theme versions that match w/ your core nodebb install version. (probably need to stick with whatever theme versions it reinstalls, because I've always had problems w/ updating themes, I don't upgrade them anymore) Stick with what came with the nodebb install originally. This will revert back to originals: ./nodebb stop (close nodebb) npm uninstall nodebb-theme-lavender npm uninstall nodebb-theme-vanilla npm install nodebb-theme-vanilla npm install nodebb-theme-lavender ./nodebb start. try avoid editing too much .less and .tpl in the theme files and stick as much as possible in the Custom css area in your ACP

I imagined something like that for filtering by categories. The active tab would be bigger than the others.