Infant milestones not working

Hi, so I noticed recently when playing with infants  that the milestones aren't working very well, if you close and reopen the game they will work for a little bit but then break again, the infants will sparkle as if they are about to get the milestone, the parent will also get a cued action saying watch infant milestone, but then nothing happens, there’s no pop up saying they reached it and there’s no milestone in the milestones page. I hope that they fix this very soon as it is becoming very annoying to play with.