I find them to be funny when they get stuck by the black flowers. They are always doing some form of talking: praising, telling a story, chatting, etc. And they twitch as if they're having some kind of seizure! I had two of them get stuck at the same time, and it was hilarious to see them both stuck, superimposing the hair from the one in the back onto the one in the front. It looked as if a new villager had been created!
It doesn't seem to hurt them any (I'd think they'd have a heart attack with all that twitching!). It just keeps them from working. As long as I check the map every now and then, I can move them fast enough to not make any real impact on their skill levels.
I do hope it's fixed in VV3, but every piece of software will have its glitches (even the coding language will have bugs and anomalies which can affect the resulting software). It doesn't bother me much when it's only an aesthetic problem, as compared to something that negatively affects a person's computer.