PDF/A-1b：参考书目：渲染字形的宽度信息不一致

Question

目标是创建一个PDF/a-1b符合要求的文档。该文档包含 100 多页，包含数十个公式、表格和图形。问题是以下错误仅在参考书目页面上多次出现：

渲染字形的宽度信息不一致在参考书目页面中。

参考书目定义如下：

\documentclass{article}
\usepackage[a-1b,usecharset]{pdfx}

\begin{filecontents*}[overwrite]{external.bib}

@inproceedings{machacek-bojar-2014-results,
    title        = {Results of the {WMT}14 Metrics Shared Task},
    author       = {Mach{\'a}{\v{c}}ek, Matou{\v{s}}  and Bojar, Ond{\v{r}}ej},
    year         = 2014,
    month        = jun,
    booktitle    = {Proceedings of the Ninth Workshop on Statistical Machine Translation},
    publisher    = {Association for Computational Linguistics},
    address      = {Baltimore, Maryland, USA},
    pages        = {293--301},
    doi          = {10.3115/v1/W14-3336},
    url          = {https://aclanthology.org/W14-3336}
}

\end{filecontents*}

\usepackage[T1,T2A]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{csquotes}
\usepackage[english]{babel}
\usepackage[backend=biber, bibencoding=utf8, sorting=none, style=gost-numeric, language=autobib, autolang=other, clearlang=true, defernumbers=true, sortcites=true,
doi=false, isbn=false]{biblatex}
\addbibresource{external.bib}
\title{mwe}
\date{June 2022}
\begin{document}
\cite{machacek-bojar-2014-results}
\section{Introduction}
\printbibliography
\end{document}