copper zone stack with fillets causes silent DRC violations

[Oleg Endo]

When there is a the following example layered zone stack:

prio 0 - GND
prio 1 - 5V
prio 2 - GND

there are issues with the filleting/chamfering which result in silent DRC violations and wrongly connected copper areas. The filleting for "prio 2 GND" layer is not done in the areas where it is overlapping "prio 0 GND". See also attached screenshot of the problematic case.

Application: KiCad
Version: 6.0.0-unknown-2af41e8~86~ubuntu18.04.1, release build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.58.0 OpenSSL/1.1.1 zlib/1.2.11 libidn2/2.0.4 libpsl/0.19.1 (+libidn2/2.0.4) nghttp2/1.30.0 librtmp/2.3
Platform: Linux 4.15.0-55-generic x86_64, 64 bit, Little endian, wxGTK
Build Info:
    wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.22
    Boost: 1.65.1
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.58.0
    Compiler: GCC 7.4.0 with C++ ABI 1011

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_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

[KiCad Janitor (kicad-janitor)]

Fixed in revision 8334cb9a1cb25f9338e57a7533910ebbaba00b3b
https://git.launchpad.net/kicad/patch/?id=8334cb9a1cb25f9338e57a7533910ebbaba00b3b

[Oleg Endo (oleg.endo)]

Thanks Jeff. The issue looks better now. However, I just hit another case ... it looks a bit odd, I haven't checked if it's a side-effect of your fix, or if it was like that before, too. Can you please have a look at it?