Yebb. This happened to me with the Goths. Although it was a long time ago, probably before they patched in the fix. Sorry to see it returning but I thought it was my fault though because I actually fired the first one and that one kept appearing as butler everytime a Goth returned back to the lot after visiting another lot. I had Mortimer hire a butler and said elder appeared. After asking him about his traits, I found out that one of them is lazy so I had Morty fire him on the spot and hire a new one (this was when I thought that traits meant something; earlier I even had a family fire a maid because she had the 'hate children' trait). The new one was also an elder whom I actually aged down (in household management) to a YA because I wanted a younger butler. Fortunatly after fireing the old guy the one I wanted for the Goths appeared as ususual.
This is why I have been skeptical of hireing a butler for my other households. I don't have this problem with the maids for instance but I thought because I messed with the second butler's age I might have broken something.