What is the status of the topic David Gordon's April 21, 2017, post, "Disable 3rd party cookie requirement globally"? That post still existed in 2021, at https://support.zendesk.com/hc/en-us/community/posts/115006147787-Disable-3rd-party-cookie-requirement-globally. It has apparently been deleted, though a snapshot is available via Internet Archive. There, David wrote:
We have had several end users complain that they need to allow 3rd party cookies to login to our support portal. They mostly use Chrome and wish to not use a separate browser (such as Safari) just to access our portal. Has there been similar requests to allow this as an option?
My understanding as of mid-2021 was that Zendesk users were still required to configure their browsers to allow 3rd-party cookies--in violation of best practices established decades ago.