I also have had this problem-ESPECIALLY with my builders! I've even seen where it say the villager has improved in construction and yet the bar did not move (I have a way of marking it to see whether or not the bar has moved or not...) And I have this man who his getting closer and closer to being elderly and although he is soooo close to being a master builder (which I desperately need him to be!!) it just won't move! He's been at it for at least 5 years!
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Meet Koa. Koa's afraid of running. Koa's afraid of bees. This is not a good mix, Koa.
Meet Topaz. Topaz hates herbs. Topaz keeps going over to the herb and then running away. This is not smart, Topaz!
"Toki's Troubles" part of my TLC series coming soon!