bug#34639: 26.1; Custom themes break terminal when switching to org-mode

[Eli Zaretskii]

> From: Vika Shleina <kisik21@fireburn.ru>
> Cc: 34639@debbugs.gnu.org
> Date: Sun, 24 Feb 2019 22:53:04 +0300
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Is this all on the same computer?  If so, could it be your video
> > driver?  If it has some "optimization" features, try disabling them.
> 
> Unlikely, as the problem is completely text-based. Video drivers
> shouldn't be involved in terminal output as far as I know.

But this is terminal emulator, not the Linux console, right?  If so,
then the driver _is_ involved, because the emulator is likely an X
program.