Graph View Pinch Zoom Doesn't work

[wxtim]

Description

Using a browser on a tablet/phone the pinch zoom only works for a fraction of a second.

https://github.com/user-attachments/assets/167b1c1b-9e29-423a-a417-1b39a3458015

I'd expect a smooth zoom which stays at that level when I remove my fingers.

Details

Reproduced using Firefox for Android on both a Google Pixel 6Pro and a Samsung Galaxy Tab A SM-T510