[NTG-context] Odd Font Behavior in startstop Group

[Michael Urban]

I am experiencing an odd behavior switching text styles in a defined startstop group ("blockquote").   I get different behavior depending on whether the switchtobodyfont in the startstop definition includes the dummy {\it } and {\bf } text.   If they are not there, the italic and boldface switches in the second blockquote revert to the gyreschola body font of the main text; but this only happens if there is an earlier blockquote with no style changes.  This is with:

$  context --version
mtx-context     | ConTeXt Process Management 1.03
mtx-context     |
mtx-context     | main context file: /usr/local/texlive/texmf-local/tex/context/base/mkiv/context.mkiv
mtx-context     | current version: 2020.03.10 14:44
mtx-context     | main context file: /usr/local/texlive/texmf-local/tex/context/base/mkiv/context.mkxl
mtx-context     | current version: 2020.03.10 14:44

Do I need a newer version of ConTeXt, or am I doing something wrong?
Fonts in ConTeXt are always perilous, alas.  For me, anyway.





\definefallbackfamily[story][serif][notoserif][range={greekandcoptic,greekextended},force=yes]
\definefontfamily[story][serif][TeX Gyre Schola]
\definefontfamily[story][sans][modern]
\definefontfamily[story][mono][modern]
\definefontfamily[story][mm][TeX Gyre Pagella Math]
\setupbodyfont[story,11pt]

\definestartstop[blockquote]
 [
  before={ \blank \startnarrower \setupwhitespace[2pt] \setupindenting[none]
           \switchtobodyfont[termes]{\it }{\bf }% This is so weird.  Put a comment marker after [termes] for a different result
  },
  after={ \stopnarrower \blank \indenting[next]},
 ]%
\starttext
\chapter{Testing}
\input ward

\startblockquote
\input knuth

\stopblockquote

\input zapf

{\it This is what Italic letters look like.} {\bf And these are bold.}


\startblockquote
This is what it said, in {\it Italic} and {\bf bold} letters:

\bgroup
\it\noindent This is what Italic letters look like here.
\egroup

\bgroup
\bf\noindent This is what Bold letters look like here.
\egroup
\stopblockquote
\stoptext