I'm seeing this as well.  Here is the backtrace and version info.

Application: Eeschema
Version: (5.1.0-1449-g5aa48e523), debug build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.65.1 OpenSSL/1.1.1c zlib/1.2.11 libidn2/2.2.0 libpsl/0.20.2 (+libidn2/2.0.5) libssh2/1.8.0 nghttp2/1.37.0 librtmp/2.3
Platform: Linux 4.19.0-5-amd64 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: 1.67.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.65.1
    Compiler: Clang 7.0.1 with C++ ABI 1002

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

thread 1 "kicad" received signal SIGSEGV, Segmentation fault.
0x00007ffff74beeb9 in wxEvtHandler::DoBind(int, int, int, wxEventFunctor*, wxObject*) () from /usr/lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
(gdb) bt
#0  0x00007ffff74beeb9 in wxEvtHandler::DoBind(int, int, int, wxEventFunctor*, wxObject*) () at /usr/lib/x86_64-linux-gnu/libwx_baseu-3.0.so.0
#1  0x00007fffe0acc922 in wxEvtHandler::Connect(int, int, int, void (wxEvtHandler::*)(wxEvent&), wxObject*, wxEvtHandler*)
    (this=0x0, winid=-1, lastId=-1, eventType=10049, func=
    (void (wxEvtHandler::*)(wxEvtHandler * const, wxEvent &)) 0x7fffe0b0af90 <DIALOG_CHOOSE_COMPONENT::OnCharHook(wxKeyEvent&)>, userData=0x0, eventSink=0x9fd6a60) at /usr/include/wx-3.0/wx/event.h:3497
#2  0x00007fffe0acb8a7 in wxEvtHandler::Connect(int, void (wxEvtHandler::*)(wxEvent&), wxObject*, wxEvtHandler*) (this=0x0, eventType=10049, func=
    (void (wxEvtHandler::*)(wxEvtHandler * const, wxEvent &)) 0x7fffe0b0af90 <DIALOG_CHOOSE_COMPONENT::OnCharHook(wxKeyEvent&)>, userData=0x0, eventSink=0x9fd6a60) at /usr/include/wx-3.0/wx/event.h:3515
#3  0x00007fffe0b0a30f in DIALOG_CHOOSE_COMPONENT::DIALOG_CHOOSE_COMPONENT(SCH_BASE_FRAME*, wxString const&, wxObjectDataPtr<LIB_TREE_MODEL_ADAPTER>&, int, bool, bool, bool) (this=0x9fd6a60, aParent=
    0x1cac300, aTitle=..., aAdapter=..., aDeMorganConvert=1, aAllowFieldEdits=true, aShowFootprints=true, aAllowBrowser=true)
    at /home/wayne/src/kicad-trunk/eeschema/dialogs/dialog_choose_component.cpp:176
#4  0x00007fffe0cd63f2 in SCH_BASE_FRAME::SelectCompFromLibTree(SCHLIB_FILTER const*, std::vector<SCH_BASE_FRAME::COMPONENT_SELECTION, std::allocator<SCH_BASE_FRAME::COMPONENT_SELECTION> >&, bool, int, int, bool, LIB_ID const*, bool)
    (this=0x1cac300, aFilter=0x9fd76d0, aHistoryList=std::vector of length 0, capacity 0, aUseLibBrowser=true, aUnit=1, aConvert=1, aShowFootprints=true, aHighlight=0x0, aAllowFields=true)
    at /home/wayne/src/kicad-trunk/eeschema/getpart.cpp:164
#5  0x00007fffe0e84c78 in SCH_DRAWING_TOOLS::PlaceComponent(TOOL_EVENT const&)
    (this=0x1ce7570, aEvent=...)
    at /home/wayne/src/kicad-trunk/eeschema/tools/sch_drawing_tools.cpp:162
#6  0x00007fffe0e8b439 in std::__invoke_impl<int, int (SCH_DRAWING_TOOLS::*&)(TOOL_EVENT const&), SCH_DRAWING_TOOLS*&, TOOL_EVENT const&>(std::__invoke_memfun_deref, int (SCH_DRAWING_TOOLS::*&)(TOOL_EVENT const&), SCH_DRAWING_TOOLS*&, TOOL_EVENT const&) (__f=
    @0xc81af0: (int (SCH_DRAWING_TOOLS::*)(SCH_DRAWING_TOOLS * const, const TOOL_EVENT &)) 0x7fffe0e84470 <SCH_DRAWING_TOOLS::PlaceComponent(TOOL_EVENT const&)>, __t=@0xc81b00: 0x1ce7570, __args=...)
    at /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:73
--Type <RET> for more, q to quit, c to continue without paging--
#7  0x00007fffe0e8b337 in std::__invoke<int (SCH_DRAWING_TOOLS::*&)(TOOL_EVENT const&), SCH_DRAWING_TOOLS*&, TOOL_EVENT const&>(int (SCH_DRAWING_TOOLS::*&)(TOOL_EVENT const&), SCH_DRAWING_TOOLS*&, TOOL_EVENT const&) (__fn=
    @0xc81af0: (int (SCH_DRAWING_TOOLS::*)(SCH_DRAWING_TOOLS * const, const TOOL_EVENT &)) 0x7fffe0e84470 <SCH_DRAWING_TOOLS::PlaceComponent(TOOL_EVENT const&)>, __args=@0xc81b00: 0x1ce7570, __args=...)
    at /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:95
#8  0x00007fffe0e8b2e8 in std::_Bind<int (SCH_DRAWING_TOOLS::*(SCH_DRAWING_TOOLS*, std::_Placeholder<1>))(TOOL_EVENT const&)>::__call<int, TOOL_EVENT const&, 0ul, 1ul>(std::tuple<TOOL_EVENT const&>&&, std::_Index_tuple<0ul, 1ul>)
    (this=0xc81af0, __args=...)
    at /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/functional:400
#9  0x00007fffe0e8b24d in std::_Bind<int (SCH_DRAWING_TOOLS::*(SCH_DRAWING_TOOLS*, std::_Placeholder<1>))(TOOL_EVENT const&)>::operator()<TOOL_EVENT const&, int>(TOOL_EVENT const&) (this=0xc81af0, __args=...)
    at /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/functional:482
#10 0x00007fffe0e8af12 in std::_Function_handler<int (TOOL_EVENT const&), std::_Bind<int (SCH_DRAWING_TOOLS::*(SCH_DRAWING_TOOLS*, std::_Placeholder<1>))(TOOL_EVENT const&)> >::_M_invoke(std::_Any_data const&, TOOL_EVENT const&)
    (__functor=..., __args=...)
    at /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/std_function.h:282
#11 0x00007fffe10c4268 in std::function<int (TOOL_EVENT const&)>::operator()(TOOL_EVENT const&) const (this=0xc64d78, __args=...)
    at /usr/bin/../lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/std_function.h:687
#12 0x00007fffe10c412d in COROUTINE<int, TOOL_EVENT const&>::callerStub(long)
    (aData=140737488334400)
    at /home/wayne/src/kicad-trunk/include/tool/coroutine.h:335
#13 0x000000000058fd61 in make_fcontext ()
#14 0xffffffffffffffff in  ()
#15 0xffffffffffffffff in  ()
#16 0xffffffffffffffff in  ()
#17 0x00000000000001c1 in  ()
#18 0x0010000000000004 in  ()
#19 0x0000010100000003 in  ()
--Type <RET> for more, q to quit, c to continue without paging--
#20 0x0000000000000000 in  ()