bug#14582: 24.3.50.1; Strange overlay behavior, when window-start is inside an overlay.

[Eli Zaretskii]

> From: Michael Heerdegen <michael_heerdegen@web.de>
> Cc: larsi@gnus.org,  esabof@gmail.com,  14582@debbugs.gnu.org
> Date: Tue, 08 Feb 2022 01:29:21 +0100
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Fixed, thanks.
> 
> Ok, thanks.
> 
> The next problem: I'm reading *info*.  I'm hitting [down] multiple
> times, and when a line starts with something in Info-quoted face,
> hitting [down] one more time scrolls the buffer one line or two lines
> upwards, although the cursor is far from the last visible line.  With
> other words: when continuously hitting [down], when the cursor crosses
> some line with a certain property, the display is scrolled by a tiny
> amount, but only when the display starts at `point-min' (i.e. with the
> beginning of the narrowed section).  It happens only once.
> 
> I think this "has to do with different line heights" or so.
> Unfortunately I'm not able to reproduce this problem with emacs -Q.
> Should I bisect my config, or do you already have an idea where this
> behavior could come from?

I have an idea, but I prefer that you find the customization
responsible for this (something related to scrolling, I guess?), to be
able to reproduce in "emacs -Q".

But what does this have to do with this bug report and the new
make-window-start-visible feature?