April 2021
This has been the case since the release of the pack. Despite the description of the power, it does not, in fact, lend itself to feeding. In fact, if a sim is already being pushed to a despawn point, they won't stop at all.
November 2022
Has there been any news on this subject in the meantime?
We don't have that many perks to chose from in the first place so having a completely useless one is extremely annoying and disappointing.
November 2022
I'm actually getting this where the same thing happens after a sim has given permission to drink. The vampire just won't do it. They just stand around and eventually the interaction disappears from the queue. Interestingly, this only ever happens when the vampire leaves their home lot. If they invite a sim in, the interaction happens normally.