Scroll to zoom doesn't work on trackpads

When viewing an image, I can use my mouse wheel to scroll in and out. But if I try using the trackpad for this, using the double-finger scroll gesture that's set as the default and works in all other apps, it doesn't work in Shotwell, just juddering the cursor around slightly and not affecting the image at all.

I'm on an HP Omen 16, running Ubuntu 24.04.2.