It's simple: if you try to zoom in and out using the scroll gesture on a mousepad? It won't work!

This is, to put mildly, bad news! This should be fixed asap! (and the pinch gesture should perhaps be supported as well, as a nice bonus)

oh I'm just dumb and had the "Disable Mouse while Typing" option enabled for a good reason; welp
I did scout for the "pinch for zoom" thing though; the outcome is: GLFW doesn't have explicit support for touchpad gestures; yeah