Hi Hans,

Last week I sent you a PDF showing a strange behaviour of \startitemize and \quotation in LMTX. I finally could nail down the origin of the problem: it seems that if the command
 
	\setupsynctex[state=start]

is present twice at the beginning of the document, then the combination \item and \quotation and \dots prevents the item to be shown correctly…
(In my case I was typesetting a document with the above command in which a file containing it also was \input).

Below is the minimal example and its PDF.
	
Best regards: OK
% begin file: bug-itemize-lmtx.tex

\setupsynctex[stat=start]

\setupsynctex[state=start] % if this is removed then everything is fine…

\setupquotation[style=italic,left={«~},right={~»}]

\showframe
\starttext

\startitemize[n]

\dorecurse{4}{\item This item \quotation{is shown correcly\dots} 

\item This item \quotation{\dots is not shown correctly}}

\stopitemize

\stoptext
% end file: bug-itemize-lmtx.tex