I personally never was affected by a bug in Claude code and I've been using five in parallel for a year, for 10 hours a day, everyday.
My favourite is Claude Code's /rewind feature, which gets so many things wrong for having such a simple UI. (Does selecting the default option still wipe your filesystem changes by default when going back to a previous entry? I found a poorly-documented way to circumvent that "feature", which only adds to my initial point.)