track point slips away

<img width="1523" height="380" alt="Image" src="https://github.com/user-attachments/assets/e578caab-ed1d-4187-9c19-444d7e563561" />
<img width="1616" height="501" alt="Image" src="https://github.com/user-attachments/assets/48b0bae1-ec0b-4437-9dc7-f7e3df02fb8f" />

like the title, i shot with my Blackmagic camera on Iphone with the same setting as yours, this happens