1fa9254076
In the before Flutter video, drag happens after the 17 second mark. ## Flutter before https://github.com/user-attachments/assets/9fbcd59e-68aa-4975-9a66-f05e72071223 ## Flutter after https://github.com/user-attachments/assets/784d7f46-a8ce-4e5f-a849-3b19df6668c9 ## Flutter back swipe drag gesture https://github.com/user-attachments/assets/09d38c01-aeea-46c1-90b4-590861f8f3a2 ## Native iOS https://github.com/user-attachments/assets/f2ab96c0-766b-4452-b6d5-3f92e6b6785f ## Flutter scaled back chevron and large title after https://github.com/user-attachments/assets/ba87add7-affa-4dcc-b2f0-abbc3487d677 ## Native iOS scaled back chevron and large title https://github.com/user-attachments/assets/5c7bfe5b-5789-4ab9-8e36-770cf802b1b1 Native iOS is probably using a spring simulation. This is the closest curve we have to the native transition, but should be updated in the future with the exact values. Fixes [Cupertino navigation bars transitionBetweenRoutes fidelity update](https://github.com/flutter/flutter/issues/164662)