bug#25474: 26.0.50; Buffer content invisible

[Eli Zaretskii]

> From: "Ivor Durham" <ivor.durham@ivor.cc>
> Cc: <25474@debbugs.gnu.org>
> Date: Wed, 18 Jan 2017 13:27:21 -0800
> 
> Here is the output from M-X dump-glyph-matrix after invoking emacs -Q:

Thanks.  This output means that the Emacs display engine produced the
required display of the initial frame, and therefore the prime suspect
is the interaction with X.

Can you try running in X synchronous mode?  Like this:

  emacs -Q -xrm "emacs.synchronous: true"