15.16 is worse for me. I'm using a MS mouse, 2015 Macbook Pro, OS X Yosemite 10.10.5.
Scrolling with the MS mouse's mousewheel is crappy: the scrolling often skips and jumps, and the scroll bar doesn't update as you move (which is a bit weird).
Scrolling with the cursor keys is crappy: as you hold the key, the screen doesn't scroll (though the scroll bar does at least update...), so you can't tell where you are.
Scrolling with the PgUp/PgDn keys is crappy: as you hold the key, the screen doesn't scroll (though the scroll bar does at least update...), so you can't tell where you are. When you let go of the key... there's no scrolling. Sometimes when you move the
cursor with the arrow keys, the document scrolls so the cursor is visible; other times, the cursor stays offscreen. Which is rather unhelpful.
Scrolling with the Macbook Pro trackpad is fine: well, one out of four ain't... oh, wait a minute! One out of four is TERRIBLE.
I'm having difficulty understanding what the problem is here. The scrolling used to work fine, and now it sucks, and it's really obvious that it sucks... and yet here we are, several versions later, and it still sucks. So I'm strongly leaning towards the
theory that literally nobody on the Excel for Mac team actually uses the product. They compile it, and then they just have a vast suite of automated tests, so they know it won't crash. But no human at Microsoft has
ever actually used it.
Call me crazy. But how many other explanations are left?!
--Tom