bug#11070: 24.0.94; Large stippled images not displayed consistently

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: darthandrus@gmail.com,  rgm@gnu.org,  11070@debbugs.gnu.org
> Date: Sat, 28 Sep 2019 21:53:22 +0200
> 
> Then I scrolled down and up, and you can see some glitches at the top:
> 
> And then I scrolled around some more and the glitches start to accumulate:

Do those glitches disappear if, after scrolling, you type "M-x
redraw-display RET"?

Also, could you (or someone else) try the same in some old version of
Emacs, say, 24.3?

Thanks.