Unicode crash on FreeBSD

[AMDmi3]

bonzomatic-2022.07.08, FreeBSD 13.1 amd64, locale C.UTF-8.

1. Any unicode input is displayed with ?'s
2. Sometimes it crashes after inputting non-ascii character (crash seems to be reproducible when inserting a unicode character in the // in seconds comment on the third line of default script)

(gdb) bt
#0  kill () at kill.S:4
#1  0x0000000800b99ab0 in __fail (msg=<optimized out>) at /usr/src/lib/libc/secure/stack_protector.c:130
#2  0x0000000800b99a20 in __stack_chk_fail () at /usr/src/lib/libc/secure/stack_protector.c:137
#3  0x000000000027c862 in Scintilla::SurfaceImpl::MeasureWidths (this=0x80b25cb40, font=..., str=0x8014471fb "// in se\320\262conds", len=-1, positions=0x80b25af2c)
    at /usr/work/usr/ports/graphics/bonzomatic/work/Bonzomatic-2022-07-08/src/Platform.cpp:455
#4  0x0000000000379da6 in Scintilla::PositionCache::MeasureWidths (this=0x7ffffffdd480, surface=0x80b25cb40, vstyle=..., styleNumber=2, s=0x8014471fb "// in se\320\262conds", 
    len=15, positions=0x80b25aef0, pdoc=0x8014f8c00) at /usr/work/usr/ports/graphics/bonzomatic/work/Bonzomatic-2022-07-08/external/scintilla/src/PositionCache.cxx:678
#5  0x000000000035d786 in Scintilla::EditView::LayoutLine (this=0x7ffffffdd400, model=..., line=2, surface=0x80b25cb40, vstyle=..., ll=0x80b22cb20, width=1410)
    at /usr/work/usr/ports/graphics/bonzomatic/work/Bonzomatic-2022-07-08/external/scintilla/src/EditView.cxx:476
#6  0x000000000033228f in Scintilla::Editor::WrapOneLine (this=0x7ffffffdc1a0, surface=0x80b25cb40, lineToWrap=2)
    at /usr/work/usr/ports/graphics/bonzomatic/work/Bonzomatic-2022-07-08/external/scintilla/src/Editor.cxx:1386
#7  0x000000000032efd6 in Scintilla::Editor::WrapLines (this=0x7ffffffdc1a0, ws=Scintilla::Editor::wsAll)
    at /usr/work/usr/ports/graphics/bonzomatic/work/Bonzomatic-2022-07-08/external/scintilla/src/Editor.cxx:1461
#8  0x0000000000332f81 in Scintilla::Editor::Paint (this=0x7ffffffdc1a0, surfaceWindow=0x80af9d7c0, rcArea=...)
    at /usr/work/usr/ports/graphics/bonzomatic/work/Bonzomatic-2022-07-08/external/scintilla/src/Editor.cxx:1633
#9  0x0000000000287ba2 in ShaderEditor::Paint (this=0x7ffffffdc1a0) at /usr/work/usr/ports/graphics/bonzomatic/work/Bonzomatic-2022-07-08/src/ShaderEditor.cpp:248
#10 0x00000000002908fa in main (argc=1, argv=0x7fffffffe810) at /usr/work/usr/ports/graphics/bonzomatic/work/Bonzomatic-2022-07-08/src/main.cpp:574