Children Can't Bob For Apples

I must not have moved the tank far enough last time. Moving it worked, but it still isn't functional in the originally intended place. I don't want to have to reorganise the lot. I'm used to it in that layout from all my time with this game. I'll look in the community lot list to see if it's there.

Edit: I found the festival grounds in the community lot list, but it made no difference. Also, I can't find an area on the grass that works. The kid will only use the tank if it's on one of the big paths that criss-cross the lot. I don't understand why he can use it there and not where it was originally. The teens, young adults, adults, and elders all can. Maybe I'm not understanding the issue ciane mentioned about the animations. I had figured if that was my problem then the kid shouldn't be able to use it even if the tank was moved.