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Your LimeSurvey version: 5.6.25+230605
Own server or LimeSurvey hosting: both
Survey theme/template:
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I notice issues with exported sav and sps files when users put (’) u+2019 in their forms. Jamovi, pspp and some libs couldn't open this files.
It can be solve by replacing ’ by ' u+0027 during a export/import of the survey. I don't check how do you generate spss files, using an external lib maybe ? If so this issue could be also submit to the lib dev.
Thank for you work
 

It's mention in the code that limesurvey use this project base code for this format export
github.com/tiamo/spss/

YHou can report it as issue since SPSS export is included in core
community.limesurvey.org/bug-tracker/

And if you already kow the fix : You can create a PR at same time
manual.limesurvey.org/Development_overview