I too had the problem with the highlighted villager often not being the one selected. It gradually stopped happening, and I suspect that it is something like the "click box" for the selection is a bit offset or too small or something, so that I gradually adapted to the "sweet spot".

I don't know if it's a bug, or if I have something yet to do after (I thought) completing Puzzle 10, but it doesn't show up on the Puzzles page as completed.

Here's one I almost hate to report.. the Rascal seems to have found himself in some quicksand or something in the NW edge of the Puzzle 10 feature. Anyway I left the game on while away for a few minutes and returned to find him immobile in that location, with only his head visible. So far I haven't found a way to extricate him, not that I've tried TOO hard yet! LOL He can still jump, and rant, but his "activity" either says "Nothing" or speeds so fast through his choices that they're difficult to read.