Your overall rating takes all your games into account, therefore it can adjust faster (faster since more games per time). Your breakdown ratings are just slower to adjust to you becoming better.
This is basically the reason 1) and 2) are not in effect.
We changed the breakdown ratings to compute against you opponent’s overall rating, so the ratings should be on comparable scales. This change is in effect as longaas you can toggle between ratings and rank on the breakdown chart.
As mentioned above the breakdowns have the tendency to lag behind and never catch up.