bug#32002: 24.4; Scroll bar start, end not correct

[Eli Zaretskii]

> Date: Tue, 10 Jul 2018 12:16:55 -0700
> From: Andrew Kurn <kurn@sfu.ca>
> 
> But, but, but if I then put the mouse on it and pull down,
> the text goes off the top. (The scroll bar still covers
> the whole track.)

That's a feature.  You can do the same one line at a time with
"C-u 1 C-v".  Using the scroll bar invokes the same commands, so it
behaves the same.  It has nothing to do with the appearance of the
thumb.

> Worse, if I mouse the bar up, nothing happens.  The text
> does not reappear.

Really?  How do you move the thumb and to what position on the bar?

And what happens if you click on the stepper (that tiny arrow at the
top of the scroll bar)?

> So we still got problems.

Those are entirely different issues, unrelated to the size of the
thumb when all of the buffer is on display.