<!-- --------Before Creating a New Issue----------- * Limit report to a single issue. * Search the issue tracker to verify the issue has not already been reported. * Complete all instructions between `template markers <>. * Keep report contents limited to the necessary information required to fix the issue. ---------Add your issue details below----------- --> # Description <!-- What is the current behavior and what is the expected behavior? --> <!-- If the issue is visual/graphical, please attach screenshots of the problem. --> When viewing the pcb in 3d, the rendering of the tracks and zones is missing. I seem to remember that they were previously rendered I am attaching a stupid example file. However, it does not display traces of old pcbs too ..[test.zip](/uploads/bb7eaacffa1873b4094325706796ff42/test.zip)  # KiCad Version <!-- Copy version information (from main menu Help->About KiCad ->Copy Version Info) and paste it between the triple backticks below to preserve the formatting. --> ``` Application: Pcbnew Version: (5.99.0-unknown-r19913)-4354fa7b, debug build Libraries: wxWidgets 3.0.4 libcurl/7.69.1 OpenSSL/1.1.1g-fips zlib/1.2.11 brotli/1.0.7 libidn2/2.3.0 libpsl/0.21.0 (+libidn2/2.3.0) libssh/0.9.4/openssl/zlib nghttp2/1.41.0 Platform: Linux 5.8.4-200.fc32.x86_64 x86_64, 64 bit, Little endian, wxGTK Build Info: Date: Sep 6 2020 09:35:32 wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24 Boost: 1.69.0 OCC: 7.4.0 Curl: 7.69.1 ngspice: 32 Compiler: GCC 10.2.1 with C++ ABI 1014 Build settings: 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_OCC=ON KICAD_SPICE=ON KICAD_STDLIB_DEBUG=OFF KICAD_STDLIB_LIGHT_DEBUG=OFF KICAD_SANITIZE=OFF ```