Heekscad/cnc crash

Hi Dan, I installed on Debian Buster, from heekscad/cnc libarea source, opencamlib, as indicated in the wiki, but when I run gcode generation operations or try to save it, the program often hangs, and in the worst case crashes.

Thank you for your precious help, have a nice day, Eugenio.

Here is the output:

ASSERT INFO:
../src/gtk/textctrl.cpp(1757): assert "start >= 0 && end <= l" failed in SetStyle(): invalid range in wxTextCtrl::SetStyle

BACKTRACE:
[1] wxTextCtrl::SetStyle(long, long, wxTextAttr const&)
[2] CNCCodeBlock::FormatText(wxTextCtrl*, bool, bool)
[3] CNCCode::HighlightBlock(long)
[4] COutputTextCtrl::OnMouse(wxMouseEvent&)
[5] wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&)
[6] wxEventHashTable::HandleEvent(wxEvent&, wxEvtHandler*)
[7] wxEvtHandler::TryHereOnly(wxEvent&)
[8] wxEvtHandler::ProcessEventLocally(wxEvent&)
[9] wxEvtHandler::ProcessEvent(wxEvent&)
[10] wxEvtHandler::SafelyProcessEvent(wxEvent&)
[11] wxTextCtrl::GTKProcessEvent(wxEvent&) const
[12] g_closure_invoke
[13] g_signal_emit_valist
[14] g_signal_emit
[15] gtk_propagate_event
[16] gtk_main_do_event
[17] g_main_context_dispatch
[18] g_main_loop_run
[19] gtk_main
[20] wxGUIEventLoop::DoRun()
[21] wxEventLoopBase::Run()
[22] wxAppConsoleBase::MainLoop()
[23] HeeksCADapp::OnRun()
[24] wxEntry(int&, wchar_t**)
[25] main
[26] __libc_start_main
[27] _start