Comment by JKCalhoun

Disappearing scrollbars pisses me off as well.

But I can tell you how/why (I think) it happened.

They dropped them in iOS when the iPhone rolled out. It made sense given the small display area where even a 10 to 12 pixel column makes a difference.

And then, sadly, there came the slow roll to make both MacOS and iOS look the same and so they started auto-hiding on the Mac as well.

It's the form-before-function that I loathe ever since Jony started making round mice or USB connectors impossible to find.