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I don’t think here would be the best spot to post this bug report, but the link for bug reporting is broken at sourceforge.
Anyway, 6.8.1 was fine, jumped right to 6.8.3, and now saving macros is broken.
Sourceforge is no longer used for Notepad++. Issues for Notepad++ can be created here on Github. Also, it looks like this exact issue has already been reported.