The directional navigation (j,k,l,h) works fine. Opening, closing, and marking articles doesn't work. Pushing the 'o' key changes the URL but the page remains unchanged. Additionally, if some topics are removed via filtering, the navigation can still invisibly scroll to them. I know this because pressing 'o' causes the URL to change to an entry I have hidden. I've tried this logged in and not, in a private browser window and not, and on multiple browsers.
Firefox 144.0 (64-bit) - Arch Linux
Chrome 141.0.7390.122 (Official Build) (64-bit) - Arch Linux
I expect not to be able to invisibly highlight hidden articles and I expect the action hotkeys (o,m,x,enter) to function as described in the help menu raised with '?'