Arcs aren't mirrored when printing mirrored

[eelik]

I found https://bugs.launchpad.net/kicad/+bug/1514197 but it's old and marked as "fix released". However, I find arcs which are not mirrored properly when printing mirrored. They look like mirrored compared to other elements in the printout, i.e. wrong.

The arcs are in Edge.Cuts. They are rounded corners in the outline, radius 0.5mm. Attached is a screenshot from the print preview where the bottom outline should be continous.

Application: kicad
Version: (5.1.0)-1, release build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.61.1 OpenSSL/1.1.1 (WinSSL) zlib/1.2.11 brotli/1.0.6 libidn2/2.0.5 libpsl/0.20.2 (+libidn2/2.0.5) nghttp2/1.34.0
Platform: Windows 7 (build 7601, Service Pack 1), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
    wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8)
    Boost: 1.68.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.61.1
    Compiler: GCC 8.2.0 with C++ ABI 1013

Build settings:
    USE_WX_GRAPHICS_CONTEXT=OFF
    USE_WX_OVERLAY=OFF
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=OFF
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=OFF
    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 2e43c6c64e0bdf7a7c5897db2b7b53d0da31080e
https://git.launchpad.net/kicad/patch/?id=2e43c6c64e0bdf7a7c5897db2b7b53d0da31080e

[DDuck007 (dduck007.01)]

... tested with actual nightly and just compiled actual master-branch: The problem is still there.
It is visible in preview if mirroring is selected.

[eelik (eelik)]

I agree with Duck. Here's a screenshot for a proof (Fallback canvas, flipped view).

Application: kicad
Version: (5.1.0-495-ge10c01aaf), release build
Libraries:
    wxWidgets 3.0.4
Platform: Linux 4.15.0-47-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
    Compiler: GCC 7.3.0 with C++ ABI 1011

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=OFF
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=OFF

[eelik (eelik)]

(I should have put the previous comment under some other bug report because mine was originally about printing, not Fallback canvas, but apparently it's the same problem...)