Hello, the following MWE produces an error, which looks like it might be a bug: ``` \localrightbox{xyz}% \hfill\break \localleftbox{abc}% \bye ``` Output: ``` This is LuaTeX, Version 1.21.0 (TeX Live 2025/Homebrew) restricted system commands enabled. (./free.tex warning (nodes): attempt to copy free hlist node 399, ignored warning (nodes): attempt to copy free hlist node 369, ignored Underfull \hbox (badness 10000) in paragraph at lines 2--4 [1{/opt/homebrew/Cellar/texlive/20250308_1/share/texmf-dist/fonts/map/pdftex/up dmap/pdftex.map}]) (see the transcript file for additional information) Output written on free.pdf (1 page, 8930 bytes). Transcript written on free.log. ``` Additionally, the \localleftbox contents do not appear. Additional information from luatex --credits: ``` Compiled with libpng 1.6.47; using 1.6.47 Compiled with lua version 5.3.6 Compiled with mplib version 2.11 Compiled with zlib 1.2.12; using 1.2.12 Development id: 7667 ```