Thank you so much for your purchase and the feedback. I will put it on my list! Panning and zooming is supported already, but you have to use the scroll wheel on a mouse. I’m assuming you’re using a laptop, and that’s why it’s not working for you. I will prioritize adding some laptop-friendly solution for that.
Fedora 44 with Gnome 50 on a Framework 12 laptop.
I figured out the problem though. I had the "disable touchpad while typing" setting toggled, and of course, it registers the holding-down of spacebar as "typing" and dutifully disables the touchpad. If I untoggle that setting, it works.
Might be worth finding a way around it. I imagine that's a popular setting to have activated.