I previously had "getCookies": false in hof.settings.json. I have now removed it in favour of using the default cookies but the deprecation warning shows in the console:
Warning: `getCookies` option is deprecated and may be removed in future versions. has been deprecated.
Use `pages` to define static cookies page.
The warning doesn't appear when the option is there and set to false. It appears when it's either set to true or not set at all. It would make sense to display it if the option is in use regardless of the value, but I'm not using it and I've set up the static cookies page correctly.