In the MacOS app, Cmd+Z (the universal undo command) erases the entire message instead of the last thing you typed. You should not be overriding basic text editing standards as they are so ingrained in muscle memory it’s really hard to avoid. Over and over again I write a long question with context and simply mistype something and want to just undo it only to have my entire message erased. I believe this bug appeared just yesterday after the latest update (Version 1.2024.317 (1731962521).