Symbol editor: segfault duplicating pin

Came to report 2 bugs, probably it is related.

1º How to reproduce:

KiCad -> Symbol Editor -> select any symbol -> select one pin the duplicate

When place the application will be crached, but to close need to wait to "force quit"

2º How to reproduce:

KiCad -> Symbol Editor -> select any symbol -> select one pin -> right click to copy -> right click to paste -> then click "e" to edit

This time generates segmention fault

dmesg:
[ 1650.284393] kicad[6546]: segfault at 3000000075 ip 00007ff908fe076e sp 0000564b3676db30 error 4 in _eeschema.kiface[7ff908ca8000+8fe000]

$ coredumpctl dump
           PID: 6546 (kicad)
           UID: 1000 (xathar)
           GID: 1000 (xathar)
        Signal: 11 (SEGV)
     Timestamp: Mon 2019-05-27 09:22:49 WEST (5min ago)
  Command Line: /usr/lib/kicad-nightly/bin/kicad
    Executable: /usr/lib/kicad-nightly/bin/kicad
 Control Group: /user.slice/user-1000.slice/session-c2.scope
          Unit: session-c2.scope
         Slice: user-1000.slice
       Session: c2
     Owner UID: 1000 (xathar)
       Boot ID: a95da890fd2344de9fc99e8375c36ba4
    Machine ID: 82929df7ee394b73b81252fe3b4e5020
      Hostname: MSI-GP63-Leopard-8RE
       Storage: /var/lib/systemd/coredump/core.kicad.1000.a95da890fd2344de9fc99e8375c36ba4.6546.1558945369000000.lz4
       Message: Process 6546 (kicad) of user 1000 dumped core.

                Stack trace of thread 6546:
                #0 0x00007ff908fe076e n/a (_eeschema.kiface)
                #1 0x00007ff908f97cc9 n/a (_eeschema.kiface)
                #2 0x00007ff909175ae7 n/a (_eeschema.kiface)
                #3 0x00007ff90917563c n/a (_eeschema.kiface)
                #4 0x00007ff909354890 n/a (_eeschema.kiface)
                #5 0x00007ff9093b0531 make_fcontext (_eeschema.kiface)
Refusing to dump core to tty (use shell redirection or specify --output).

Kicad version:
Application: KiCad
Version: 6.0.0-unknown-b5c80fe~100~ubuntu18.04.1, release build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.58.0 OpenSSL/1.1.0g 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 4.15.0-50-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:
    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