This is an issue on console too, not just a PC problem. Movement maxed out, no Learn to Run milestone - it's still greyed out, despite the toddler being able to run and milestones seem to be learned out of order. As with everyone else, my toddler got every infant milestone except First Trip to Park and First Visit to a Family Member's Home, I only learned of those after I aged the twins up to toddlers, so started with the boost on movement, thinking and imagination (I think those are the 3 boosts).Also, quick question - my toddlers both received Max Communication, Max Imagination and Mastered Potty Training milestones, does that mean there is also a Max Movement milestone? If so, then neither of them have received that either. They've not mastered thinking just yet so I don't know if it too comes with a milestone.