There's multiple lapses with Tor that users had depended on against State sponsored attackers and came up short. Bad States setting up hundreds of their own Tor guard servers, Tor exit servers like I have seen Israel do to trick users into thinking those are just normal tor servers forming part of their tor network. Meanwhile they try and discern who, what, where users are located and who they are connected to tor are.
Off the record is a fast AES-128 keyed encryption that is often optionally used in chat rooms, and messages regardless if its over the tor network or not.
More information https://profanity-im.github.io/guide/0100/otr.html