8chan features script
8Chan had a recent update, multiple nested replies are supported natively.
When I use the native one it only takes one reply. If I try to click another reply within that reply, nothing happens. Maybe that's intentional.
Was the case for me too, but once I did ctrl+f5, it started working.
Nested replies don't work anymore. The settings say to enable the native inline replies, but those only go one level deep, which is pretty useless.