LuaLaTeX & fwlw - supress hyphenation in NextWordBox

If I use LuaLaTeX and fwlw package, word in NextWordBox is hyphenated, it is undesirably.
(If XeLaTex – no).
Can it be fixed?

MWE:

documentclass[]{scrbook}
usepackage{polyglossia}
usepackage{fontspec}
usepackage{fwlw}
usepackage[includefoot=true,papersize={15em,20em}]{geometry}

setmainlanguage{english}

usepackage{scrlayer-scrpage}
rofoot{useboxNextWordBox}
refoot{useboxNextWordBox}

usepackage{lipsum}

textwidth=10em%
textheight=29ex%

begin{document}
lipsum[1]

pagebreak

end{document}

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XeLaTeX pdf:

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LuaLaTeX pdf: