That's actually one of the better new features in Windows 10 (that you can these days scroll an inactive window).

Oh, really? I might give it a try again one of these days, then.

I'm no Windows fan, but Windows 10 is the first where I don't actively hate the window manager. Well, I do hate how it keeps moving all my windows to the left side of the desktop. Not sure why that is happening. So I guess I hate something different about it now.

You mean it's snapping to the left half after some action? That would probably be when you press Windows+Left-Arrow, happens to me sometimes when I try to do Ctrl-left for example.

It's generally when I unlock the screen after waking up. I have no idea if I accidentally pressed Windows+Left, but it's doing this very consistently.

sounds a bit like a driver issue, like it changes the screen resolution during wake-up. you should figure out whether it's the exact size used for half-pane snapping (which sounds like userland issue), or whether it's some other size.

I don't think it's the size for 'half-pane snapping'. It seems a faulty screen resolution change on wake-up might indeed be my problem.

But in MacOS, typing doesn't follow the mouse by default. So you're scrolling away in a window you don't realize is inactive. Then go to close a tab or type and you've just closed a tab in a random application two monitors away. And it can be hit-or-miss whether you realize which application you just interacted with (or where you just inserted characters into your code).

Ugh this happens to me all the time, but on the other hand I'll sometimes be scrolling through a pdf with my trackpad, but typing in a pane on the left, so I do find it quite useful to have that split between kb/pointer focus.

Also: there was an app, sorry, a program we used with Windows98 that did this, Focus something or other it was called.

Yeah, Windows can actually do that now.