Even worse. On MacOS the scrollbars are invisible by default, and only appear while you scroll, plus a second or so after stopping.
So to grab a scrollbar in MacOS you first have to scroll the document to make the scrollbar appear. Then you have under two seconds to move the pointer on top of the narrow scrollbar so it expands allowing you to grab it before it disappears again.
There is, and I'm pretty sure if you connect a mouse instead of a trackpad it enables by default. It took me a while to workout why I was seeing scrollbars again and how to disable it when I got a mouse.
So to grab a scrollbar in MacOS you first have to scroll the document to make the scrollbar appear. Then you have under two seconds to move the pointer on top of the narrow scrollbar so it expands allowing you to grab it before it disappears again.