Comment 3 for bug 1551679

Possibly Windows-specific? I can't reproduce this on 4.0.7 OSX:

Application: kicad
Version: 4.0.7 release build
wxWidgets: Version 3.0.2 (debug,UTF-8,compiler with C++ ABI 1002,GCC 4.2.1,STL containers,compatible with 2.8)
Platform: Mac OS X (Darwin 17.3.0 x86_64), 64 bit, Little endian, wxMac
Boost version: 1.57.0
Curl version: libcurl/7.54.0 LibreSSL/2.0.20 zlib/1.2.11 nghttp2/1.24.0
         USE_WX_GRAPHICS_CONTEXT=ON
         USE_WX_OVERLAY=ON
         KICAD_SCRIPTING=ON
         KICAD_SCRIPTING_MODULES=ON
         KICAD_SCRIPTING_WXPYTHON=ON
         USE_FP_LIB_TABLE=HARD_CODED_ON
         BUILD_GITHUB_PLUGIN=ON

... or on a current build on OSX:

Application: kicad
Version: (2018-01-02 revision f961e5191)-master, debug build
Libraries:
    wxWidgets 3.0.3
    libcurl/7.54.0 LibreSSL/2.0.20 zlib/1.2.11 nghttp2/1.24.0
Platform: Mac OS X (Darwin 17.3.0 x86_64), 64 bit, Little endian, wxMac
Build Info:
    wxWidgets: 3.0.3 (UTF-8,STL containers,compatible with 2.8)
    Boost: 1.65.1
    Curl: 7.57.0
    Compiler: Clang 9.0.0 with C++ ABI 1002

Build settings:
    USE_WX_GRAPHICS_CONTEXT=ON
    USE_WX_OVERLAY=ON
    KICAD_SCRIPTING=OFF
    KICAD_SCRIPTING_MODULES=OFF
    KICAD_SCRIPTING_WXPYTHON=OFF
    KICAD_SCRIPTING_ACTION_MENU=OFF
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=OFF
    KICAD_SPICE=OFF