bug#57728: 29.0.50; Emacs writes wrong glyph at the bottom-right corner of text terminals

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Akib Azmain Turja <akib@disroot.org>,  57728@debbugs.gnu.org
> Date: Sun, 11 Sep 2022 20:02:45 +0200
> 
> Note that the continuation markers have gone missing from the last three
> lines.

Doesn't happen here, neither on MS-Windows nor on GNU/Linux to which I
SSH-login via PuTTY (which AFAIK emulates xterm).  I guess this really
is specific to some terminals.