以下 MCE 编译起来非常顺利。
\documentclass{article}
\usepackage{hyperref}
\usepackage{cleveref}
\hypersetup{draft}
\begin{document}
\begin{figure}
\caption{%
foo%
% \textbf{foo}%
}
\label{bar}
\end{figure}
See \cref{bar}.
\end{document}
但是，一旦% \textbf{foo}取消注释，（第二次）编译就会失败：
! Use of \@@cref@getlabel doesn't match its definition.
\text@command #1->\edef \reserved@a {
\unexpanded {#1}}\ifx \reserved@a \@emp...
l.36 See \cref{bar}
然后，如果\hypersetup{draft}被注释掉，编译就不会失败。
你明白发生了什么事吗？
编辑：上下文
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pdflatex、xelatex或进行编译lualatex。我的文件列表：
article.cls 2021/10/04 v1.4n Standard LaTeX document class size10.clo 2021/10/04 v1.4n Standard LaTeX file (size option) varioref.sty 2021/07/07 v1.6f package for extended references (FMi) hyperref.sty 2022-05-17 v7.00q Hypertext links for LaTeX ltxcmds.sty 2020-05-10 v1.25 LaTeX kernel commands for general use (HO) iftex.sty 2022/02/03 v1.0f TeX engine tests pdftexcmds.sty 2020-06-27 v0.33 Utility functions of pdfTeX for LuaTeX (HO) infwarerr.sty 2019/12/03 v1.5 Providing info/warning/error messages (HO) keyval.sty 2014/10/28 v1.15 key=value parser (DPC) kvsetkeys.sty 2019/12/15 v1.18 Key value parser (HO) kvdefinekeys.sty 2019-12-19 v1.6 Define keys (HO) pdfescape.sty 2019/12/09 v1.15 Implements pdfTeX's escape features (HO) hycolor.sty 2020-01-27 v1.10 Color options for hyperref/bookmark (HO) letltxmacro.sty 2019/12/03 v1.6 Let assignment for LaTeX macros (HO) auxhook.sty 2019-12-17 v1.6 Hooks for auxiliary files (HO) nameref.sty 2022-05-17 v2.50 Cross-referencing by name of section refcount.sty 2019/12/15 v3.6 Data extraction from label references (HO) gettitlestring.sty 2019/12/15 v1.6 Cleanup title references (HO) kvoptions.sty 2020-10-07 v3.14 Key value format for package options (HO) pd1enc.def 2022-05-17 v7.00q Hyperref: PDFDocEncoding definition (HO) intcalc.sty 2019/12/15 v1.3 Expandable calculations with integers (HO) etexcmds.sty 2019/12/15 v1.7 Avoid name clashes with e-TeX commands (HO) puenc.def 2022-05-17 v7.00q Hyperref: PDF Unicode definition (HO) url.sty 2013/09/16 ver 3.4 Verb mode for urls, etc. bitset.sty 2019/12/09 v1.3 Handle bit-vector datatype (HO) bigintcalc.sty 2019/12/15 v1.5 Expandable calculations on big integers (HO) atbegshi-ltx.sty 2021/01/10 v1.0c Emulation of the original atbegshi hpdftex.def 2022-05-17 v7.00q Hyperref driver for pdfTeX atveryend-ltx.sty 2020/08/19 v1.0a Emulation of the original atveryend packa rerunfilecheck.sty 2019/12/05 v1.9 Rerun checks for auxiliary files (HO) uniquecounter.sty 2019/12/15 v1.4 Provide unlimited unique counter (HO) cleveref.sty 2018/03/27 v0.21.4 Intelligent cross-referencing l3backend-pdftex.def 2022-04-20 L3 backend support: PDF output (pdfTeX) ***********