Looks like this has been an issue since 2017.
Copy pasting my comment from that closed thread:
I'm still having trouble with this. For months now I've had to open Safari to use certain products. AFAICT it's only affecting Confluence and Jira for me
If I go to id.atlassian.com I get redirected to start.atlassian.com which works, but trying to go Confluence and Jira results in the redirect error mentioned above.
I've tried:
- Clearing all cookies (very frustrating)
- Disabling all extensions
- Toggling `privacy.resistFingerprinting` (it seems to be `false` by default now)
- Disabling “Enhanced Tracking Protection”
This issues seems to have been going on for years. Can you please try to reproduce it locally?