Scroll indicators now show up while the scroll view is being dragged when the scroll indicator visibility setting is TUIScrollViewIndicatorVisibleWhenScrolling.
There is still a minor issue here. If you have a lot of content in the scroll view and decide to flick several times, each time you flick the scroll knob disappears and reappears quickly at the beginning of the flick. This seems to be caused by the mouse down event. Not sure what the fix for this is.
Fixed scroll knob visibility problem; #127
Please forward this to github/twui if you'd like to see it merged. This main branch is fairly inactive.