True, but you can't see where you are in the file or what proportion of the scrollable area is shown. Call me old school, but, believe it or not, I never think to use the mouse wheel.
The scroll bar issue isn't ignored. I'll almost certainly be adding some version of a scroll bar to the new renderer. I absolutely sympathise that Adventuron has a lot of work to go to get text flow working better - but on the bright side - it is in active development :-)
