I've noticed since updating to Mavericks last week (though this is a new Macbook, and I've been on Snow Leopard forever so not sure if this is 10.9 or 10.8 or what....) that horizontal scrolling in the Finder via two-finger trackpad movements is not working well.
I've tried turning inertia on and off, no difference. Toggled everything in Trackpad in System Prefs, still no difference. It seems "sticky" -- if I move my fingers continuously, the Finder scrolls in tiny fits and starts, but if i swipe, I get a normal inertia scroll.
Horizontal scroll works fine in Safari and Chrome, and in other programs; only Finder gives me trouble. Vertical scroll is fine in all contexts.
Has anyone else experienced this? I'm not having much luck Googling this, and wanted to check in here before posting as a bug / calling in a support ticket.