Regression while adding unnumbered chapters to ToC?

[Günter Milde]

On 17.09.20, V K wrote:
> On Thursday, September 17, 2020, 08:16:57 AM GMT+3, Scott Kostyshak <skostysh at lyx.org> wrote:
> On Sat, Sep 05, 2020 at 05:22:00PM +0000, V K wrote:
> > On Saturday, September 5, 2020, 08:08:20 PM GMT+3, V K <sovhist at yahoo.com> wrote:

> I found a reason - 2.4 introduced 

> % restore \coyright definition corrupted by l7xenc.def
>  \DeclareRobustCommand{\copyright}{%
>  \ifmmode{\nfss at text{\textcopyright}}\else\textcopyright\fi}
>  \addto\noextraslithuanian{\latintext}

> (this is from conversion to tex)
> If I comment out last line, it compilse normaly.

Yes. Unfortunately, there are missing characters or wrong hyphenation in
other languages if this line is missing.
Adding T1 to the list of loaded font encodings is the better solution.

Günter