Missing list of additional cookies in "Cookie list" plugin

We upgraded from v5.5.8 to v6.0.3, using TYPO3 12.4.26. All caches were cleared, the static files were regenerated.

The cookies of all groups are correctly listed in the consent modal.

With the plugin "Cookie list" (sgcookieoptin_cookielist), only the essential_cookies are listed. All additional groups are listed, but the related cookies are missing. The array of cookies is empty in Fluid. We also tested by adding a new group with some cookie and got the same result.