My child sim brought home a school project (the volcano). The child sim sits down to start working, but no animations start and the project remains in the box. The logic plumbob appears over the child sim's head and moves up, but the child just sits there for hours doing nothing. Once I make the child do something else, I am able to put the project into her inventory, but it's just the box, unfinished.
I also tried it with a sim adult assisting the child with the project, and both sims just sat/stood there next to the project, their logic skill rising but no animation for working on the project and the project stays in the box, nothing happening.
On Xbox Series X.