I haven't been using Phabricator very long (a month or two), but have found taking tasks out of a large backlog to be quite frustrating.
I hope you'll forgive me for opening what is in large part a duplicate of {T4476} and so perhaps due to be addressed by or re-evaluated after {T5240} lands.
However, I am opening this as:
- Using a trackpad primarily, I cannot drag and scroll simultaneously, therefore a number of the T4476 suggestions would not help me.
- I regularly find window-edge scrolling to be devastatingly slow if it is responsive at all, or too fast if it isn't, so suspect the solution of T5240 will be suboptimal.
- I found a way to do what I want through CSS alone which may provide a starting point for an easy fix.