Ruleset updates in HTTPS-Everywhere complain sometimes about blocked cookie/storage access

We got a report on our blog that seems to indicate rulset updates want to get access to cookies/storage but get blocked:

Request to access cookie or storage on “https://www.https-rulesets.org/v1//rulesets-signature.1570565711.sha256” was blocked because we are blocking all third-party storage access requests and content blocking is enabled. _generated_background_page.html

Might be worth figuring out whether that's "just" noise or an actual issue and fix it either way.