IssueTracker

Thank you for filing this issue!

To help reproduce the breakage on our end, please provide us with the user-facing steps that do not work-as-intended when third-party cookies are disabled.
If the user journey is gated by a login, also include test login credentials or a test 1P site (or a “sandbox demo” environment such as glitch.com or JS Fiddle or Project IDX).
Any sensitive details (such as test login credentials) can be shared using the “Restrict this comment/attachment” feature. Look for the eye+lock icon below the comment box when responding to the ticket on issuetracker.google.com.

If providing user-facing steps is not feasible, please provide a single screen recording that shows all of the following steps:

• User journey with third-party cookies enabled
• Disable third-party cookies by enabling the 'test-third-party-cookie-phaseout' flag and disabling the 'tpcd-metadata-grants' flag from chrome://flags (learn more)
• User journey with third-party cookies disabled
• Developer console debug output showing which third-party cookie is causing breakage using the Chrome DevTools Issues tab

Please change the “Assignee” (field in the right side panel) to 3pcd-breakage-triage@google.com when it’s ready for another look.