ipadmacossidecar
I can't scroll using finger touches. I can only scroll using my Mac's trackpad.
Seeing from their own guides, it should be allowed:
Use standard gestures on iPad: Use your fingers to tap, touch and hold, swipe, scroll, and zoom.
Is my understanding of the feature correct? Can anyone get this to work?
Does anyone if there's something else required to enable touches during Sidecar?
This annoyed me too, and it doesn't seem the solution is entirely satisfying — we'll just have to hope that Twitter for Mac gets updated soon to be better compatible with Lion.
If you have "Swipe between pages" set to "Swipe left or right with three fingers" or "Swipe with two or three fingers", then left/right three-finger swipe gestures will work in Twitter.
If you have Mission Control & App Exposé set to "Swipe up/down with three fingers", then you can hold ⌥ Option to use up/down three-finger swipe gestures with Twitter. (I'm not sure why, but if you have these set to 4-finger swipes, it doesn't seem 3-finger swipes work at all in Twitter.)
The best resource I have regarding gestures in OS X is: http://www.danrodney.com/mac/multitouch.html
Best Answer
Scroll with two fingers on the iPad screen, like you do on a trackpad, with your fingers within the area to be scrolled.