My favorite bug was Claude Code kept editing some template file. Zed kept auto-formatting the file, which was BREAKING the template itself. It took me like 30 minutes of watching Claude implode, and literally using "ed" to edit the line, before I realized, then I started asking Claude how to turn off the Zed formatters to which it was like AH THAT MAKES MORE SENSE, which I thought was hilarious after it tried everything from editorconfig onwards.