I noticed that doing the multiselection and pressing the right mouse button the menu appears with the inverted mirroring icons.
I always keep wondering why don't you put a simple Horizontal and Vertical flip in place of "Mirror around vertical axis" and "Mirror around horizontal axis".
See attached snapshot
Application: kicad
Version: 6.0.0-unknown-r15630-3caa4376, debug build
Libraries:
wxWidgets 3.0.4
libcurl/7.64.0 OpenSSL/1.1.1b zlib/1.2.11 brotli/1.0.7 libidn2/2.1.1 libpsl/0.20.2 (+libidn2/2.0.5) libssh/0.8.7/openssl/zlib nghttp2/1.38.0
Platform: Linux 5.0.13-300.fc30.x86_64 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: 1.69.0
OpenCASCADE Community Edition: 6.9.1
Curl: 7.64.0
Compiler: GCC 9.1.1 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=ON
KICAD_USE_OCC=OFF
KICAD_SPICE=ON
The terminology problem originates with PCBNew where “flip” means move to the other side of the board.
That being said, it’s not clear to me that using the same term for both is worse than the confusion over mirroring.