Error 401 when trying to authorize OneDrive in Edge Chromium from Office app

[theranger]

I am trying to edit one of the diagrams embedded into Word document. The add-in authorizes successfully and shows all Sharepoint and personal storages. When I try to actually edit the file, a web page opens and asks authorization.

I have attached the work account into Windows for single-sign-on. When clicking the sign-in button, the website responds with error 401.

When trying to access the app.diagrams.net directly, the authorization succeeds, however no corporate content is displayed. I can only see the personal storage of my work account.

Any ideas?