So I was playing Alpha 3 and when I tried to promote someone the names were listed twice. Once I promoted them, the second name still appeared. If I clicked the second name on a worker with no other job it worked fine. If the worker had a job the second name didn’t work.
Steps to repeat:
Start new world.
Attempt to promote someone with trapper knife or carpenter saw.
Note the game never crashed or froze it just had double names.