[dvipdfmx] missing annotation rectangle if the box contains no glyph

[Philip Taylor]

Ulrike Fischer wrote:
>
>> Consider the following example:
>>
>>    \documentclass[dvipdfmx]{article}
>>    \begin{document}
>>    Some \special{pdf:bann}{\Huge\phantom{text}}\special{pdf:eann} goes here
>>    \end{document}

Processing that example with TeX Live 2020 PdfTeX, I am told :

> This is pdfTeX, Version 3.14159265-2.6-1.40.21 (TeX Live 2020/W32TeX) 
> (preloaded format=pdflatex)
>
> restricted \write18 enabled.
>
> entering extended mode
>
> (./untitled-1.tex
>
> LaTeX2e <2020-02-02> patch level 5
>
> L3 programming layer <2020-06-03>
>
> (c:/TeX/Live/2020/texmf-dist/tex/latex/base/article.cls
>
> Document Class: article 2019/12/20 v1.4l Standard LaTeX document class
>
> (c:/TeX/Live/2020/texmf-dist/tex/latex/base/size10.clo))
>
>
> ! LaTeX3 Error: Backend request inconsistent with engine: using 'pdfmode'
>
> (LaTeX3) backend.
>
>
> For immediate help type H <return>.
>
> ...
>
> l.2 \begin{document}
>
> ?
>

What engine should I be using ?

Philip Taylor

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