I probably need to go to the Logos Timeline training class. I didn't even know they had vertical timelines!
They're in the Bible Facts tool.
Anyway if you paste in 'The Israelites lose the first day at Gibeah' to get to the vertical timelines, if you click on a timeline rollup, it scrolls you to the top .... requiring scrolling right back down.
Or maybe it's just lack of scrolling training.