Bold text cutoff in GTK (lp:#1836498)

Original report created by Ian McInerney (imcinerney)

In the confirmation dialog that asks about unsaved changes when you close
the window there is some text being cutoff. It appears to be related to the
use of wxRichMessageDialog, since it only effects libedit on Linux (every
other unsaved changes dialog uses the normal wxMessageDialog). See the
attached screenshot for an example. The text should have "closing?" visible
on the end, and also the lower extents of the lower row of text are cutoff
(e.g. the bottom of y, p, etc.).

I think this is more of a wx bug than a KiCad bug, but I don't know which
platforms it affects. Do any OSX devs see this in any of the dialogs? All
of the unsaved changes confirmation dialogs there use the rich message. Is
this visible in libedit on Windows?



Application: LibEdit
Version: (5.1.0-1255-g20036f810-dirty), debug build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.64.0 OpenSSL/1.1.1c zlib/1.2.11 brotli/1.0.7 libidn2/2.1.1
libpsl/0.20.2 (+libidn2/2.0.5) libssh/0.8.7/openssl/zlib nghttp2/1.37.0
Platform: Linux 5.1.16-300.fc30.x86_64 x86_64, 64 bit, Little endian, wxGTK
Build Info:
    wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
    Boost: 1.69.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.64.0
    Compiler: Clang 8.0.0 with C++ ABI 1002

Build settings:
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=OFF
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

Original tags: eeschema gtk ui wxwidgets