PCBnew: Incorrect Unrouted Net count

After pouring grounds, the unrouted net count at the bottom of the screen is incorrect.

The attached image illustrates this; there is a floating island that is associated with the ground net, but isn't actually connected. Additionally, there is no rat line to indicate this, and there is Unrouted count at the bottom of the screen is zero, when it should be 1.

Expected:

1) A rat line connecting the two nets.
2) The Unrouted net count to be 1.

We are using the latest kicad from master.

===

Application: pcbnew
Version: (6.0.0-rc1-dev-313-g8db361882), release build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.60.0 OpenSSL/1.1.0h zlib/1.2.11 libidn2/2.0.5 libpsl/0.20.2 (+libidn2/2.0.4) nghttp2/1.32.0
Platform: Linux 4.17.4-1-ARCH x86_64, 64 bit, Little endian, wxGTK
Build Info:
    wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 2.24
    Boost: 1.67.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.60.0
    Compiler: GCC 8.1.1 with C++ ABI 1012

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