I noticed that when the failed milestone is trying to trigger, the infant is thinking of a nearby chair, but since they're not close enough, it fails. When it tries to trigger and the infant is close enough to a chair, it finally works.
I would expect that, rather than outright failing, the infant would scoot or crawl over to the chair and succeed in the milestone, rather than simply failing like it currently does.
For me the infant wanted to pull to stand to a nearby chair, but the chair was scooted to a table so the infant couldn't interact with it.
