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 22:35:36 +0300
> 
> C-M-f1'd to another terminal with my config and it still bugs out. Maybe
> the problem is somewhere else than the terminal?

Maybe, but what?  I cannot reproduce this on my system, FWIW.  I see
no artifacts at all.

Is this all on the same computer?  If so, could it be your video
driver?  If it has some "optimization" features, try disabling them.