@wgrace: I’ve provisionally added a new app setting that will allow the user to turn off the horizontal scroll bar on the List tab.
I’ve also turned on predominant axis scrolling, which may make scrolling a little more intuitive when horizontal scrolling is on.
See the latest beta and let me know how this works for you.
Be aware that, when horizontal scrolling is turned on (or left on), auto-hiding of the scroll bar may still make it disappear when it is not needed. It may also appear even when it does not seem to be needed, probably due to various internal calculations that are more variable than usual, since the columns that appear on the List tab will change based on the Sort sequence chosen.
Thanks for reporting this issue, Winston. Let me know if this fix helps.