I have created (and re-created) my level 3 wizard trying to get access to 4 cantrips.  The character uses 2014 but both 2014 and 2024 show level 3 wizards having 4 cantrips.  Bug?  Workaround?

This is the correct behavior; both the 2014 and 2024 versions of the Wizard class only have 3 cantrips at level 3. Both gain a 4th cantrip at level 4.

You can see this in the big table here for the 2014 version and here for the 2024 version.

Wow!  That's embarrassing!  What the hell was I looking at??  I must have mixed up classes in my head.  Wow... Sorry for wasting time!!

Not to worry, it happens to everyone!

You may have been thinking of Sorcerers, who do have 4 cantrips at levels 1-3, or your eye may have wandered over to the next column to the right in the Wizard table (the number of 1st-level spell slots) which does go from 3 to 4 at level 3.

Sorceres get 4 to start, wizards, in 2014 and 2024 only get 3. If your DM allows it, you could create a custom feat that give an extra cantrip or just as one of your feats take magical initiate, something I usually do with wizards because 3 cantrips is both challenging in a good and bad way depending on the campaign and tempo of play.