The career-development tag is now dead and gone on Stack Overflow, and has been since Monday. The tag has since achieved undead status, because it won't seem to die during the nightly cleanup routines.
However, if you enter each of these tags, there aren't any questions tagged; they all show up with "0 questions tagged".
So why does the synonym page think two questions are tagged, and why isn't this tag cleaning up? Is the tag sticking around because it has synonyms?
Will the two mystery questions please step forward?