subcircuit nodes require fake resistors

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Application: KiCad
Version: 5.1.4, release build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.67.0 OpenSSL/1.1.1d zlib/1.2.11 libidn2/2.2.0 libpsl/0.21.0 (+libidn2/2.2.0) libssh2/1.9.0 nghttp2/1.39.2
Platform: Linux 5.3.11-1-MANJARO 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: 1.71.0
    OpenCASCADE Technology: 7.4.0
    Curl: 7.66.0
    Compiler: GCC 9.2.0 with C++ ABI 1013

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

I was told a KiCAD project archive is not really fully contained, ready to run on any other machine. One must add all kind of extra resources. I tried to add some library files I created and used for this example. I hope it is a complete example and can be executed on other systems. I suspect some library files must be placed in the KiCAD folder somewhere.

I can open your project file just fine but I don't understand the bug report.

Are you saying that you'd like to simulate the current in a wire connection and not over a resistor?

@Seth
The problem is that a bunch of fake resistors must be added in the schematic in order to avoid an immediate crash.
How to replicate: open attached project example and simulate. Works without errors.
Now go inside "Sheet: AVG_CM_BUCK.sch" and delete R23, connecting the node "Cm" to node "G". The simulation does not work anymore. The R23 resistor has no role, is meaningless, it is used to enable the simulation only. Same for many other useless resistors place only to allow the simulation.

KiCad bug tracker has moved to Gitlab. This report is now available here: https://gitlab.com/kicad/code/kicad/-/issues/2595