When starting emacs under X11, the default window is very small. The
application creates the window with a size that seems to be consistent
with previous releases of emacs, but it resizes to where only three lines
of the welcome text are visible.

The window can be manually resized using the mouse. The default sizing
behavior, however, is new to this release of emacs v/s the version on stretch.

I tested this with no ~/.Xresources, no ~/.emacs and no ~/.emacs.d to verify
that this behavior is not caused by some customized setting.

My X11 server is XQuartz 2.7.11 (xorg-server 1.18.4) on Mac OS 10.13.6. This
X11 server works fine with the stretch version of emacs.

	Hello,

this is not a Debian specific bug. The same happens under Fedora
(see https://bugzilla.redhat.com/show_bug.cgi?id=1353063) and
with Emacs built from "pkgrsc". It seems to be related to GTK+ 3
because building Emacs 26.1 using GTK+ 2 avoids the problem.

	Kind regards