No ligatures in chapter

[Max Chernoff]

Hi Frank, Harald,

> if it is only happening for the font of a chapter (ie the bold face) it 
> sounds more to me like a font issue. I think I saw a recent EB Garamond 
> update, maybe something got wrong there?

I don't think that it's a font issue (or a luaotfload/fontspec issue for
that matter). This minimal example:

   \documentclass{article}
   
   \usepackage{fontspec}
   
   \parindent=0pt
   
   \def\test#1{
       \leavevmode
       \setmainfont[
           Ligatures = {Common, Rare},
           Numbers = OldStyle,
           RawFeature = {+ss06},
       ]{EBGaramond-#1}
       %
       \llap{(#1)}\quad - -- --- fi fl ffi ffl
       \par
   }
   
   \begin{document}
   
   \test{Regular}
   \test{Italic}
   
   \ExplSyntaxOn
   
   \seq_set_from_clist:Nn \l_tmpa_seq {
       Bold,
       ExtraBold,
       Medium,
       SemiBold,
   }
   
   \seq_map_inline:Nn \l_tmpa_seq {
       \test{#1}
       \test{#1Italic}
   }
   
   \ExplSyntaxOff
   
   \end{document}
   
behaves as expected for me with an up-to-date TeX Live 2022. So I suspect
that there's something weird going on elsewhere in your document.

-- Max