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

[Noam Postavsky]

Mike Kupfer <mkupfer@alum.berkeley.edu> writes:

> Mike Kupfer wrote:
>
>> With (setq scroll-bar-adjust-thumb-portion t):
>> 
>>   If I go to the bottom of my ~/.profile and start clicking on the
>>   up-stepper, the text will scroll, but the amount it moves varies from
>>   0 to 2 lines.  (I expect it to scroll 1 line per click.)
>> 
>> With (setq scroll-bar-adjust-thumb-portion nil):
>> 
>>   If I go to the bottom of my ~/.profile using M->, the last line of the
>>   file is a couple lines from the bottom of the window.  If I click once
>>   on the up-stepper, I expect the last line to move closer to the bottom
>>   of the window.  Instead, it jumps to the top of the window.
>> 
>> If I have time today, I'll try building Emacs 26 with GTK to see if it
>> behaves any better.
>
> I'm afraid the emacs-26 branch behaves the same as Emacs 25.

I don't understand what this "up-stepper" you are talking about is.