The sections of articles can no longer be expanded by clicking on them, making the vast majority of articles unreadable.
Did you try if deleting the site data helped?They had maintenance on the website overnight and once the site came back the tabs on the pages won't open.
Have you tried deleting the cached files in your browser settings? This has helped several people with that problem. I think the original problem has been fixed, but the browser caches the bugged version of the file.The inability to expand article sections is frustrating and hinders the reading experience.