Several applications in the Microsoft suite are not able to load.
I tried creating a new profile, no extension, clean, try to open https://planner.cloud.microsoft. Got the same issue.
Issue goes like this:
- Arrive on the login page.
- Ask for account, enter my work email address
- Get rerouted to SSO of the company
- enter password and 2FA
- All seems ok, but end up back on the login page
On the same page, go to https://outlook.office.com/mail/
ask to select the account (the one I entered in previous step is there), click on it. Page loads...
When looking at the errors when going back to https://planner.cloud.microsoft, I get those errors, not sure what is relevant?

The same webapps are working fine in chrome, edge, safari and Arc...
Version 0.99.135.0.1-beta (WebKit 622.1.15.19.2)
Sequoia (15)