aadTokenProviderFactory getToken() does not return anything or throw an error.

[Circlet-ND]

Target SharePoint environment

SharePoint Online

What SharePoint development model, framework, SDK or API is this about?

💥 SharePoint Framework

Developer environment

Windows

What browser(s) / client(s) have you tested

• [ ] 💥 Internet Explorer
• [X] 💥 Microsoft Edge
• [ ] 💥 Google Chrome
• [ ] 💥 FireFox
• [ ] 💥 Safari
• [ ] mobile (iOS/iPadOS)
• [ ] mobile (Android)
• [ ] not applicable
• [ ] other (enter in the "Additional environment details" area below)

Additional environment details

No response

Describe the bug / error

The code here used to work flawlessly, however for the past weeks I noticed that it keeps on stalling with no response or error message.

const provider = await this.context.aadTokenProviderFactory.getTokenProvider();
await provider.getToken("https://graph.microsoft.com")

Is there any way to fix this or did something change? I've wrapping it in a try catch but there is no error thrown.

Steps to reproduce

1. Create a SPFX webpart with Graph Permissions specified in the package-solution.json
2. Deploy app and approve the API permission from SP Admin
3. Open the webpart

Expected behavior

Webpart should get the token

[GrahamMcMynn]

Hi @Circlet-ND - could you capture a network trace and send it to grahamc at microsoft.com? It would help me investigate the issue. On a test tenant I am not seeing that behavior so would like to figure out why you are seeing that. Thank you!

[Circlet-ND]

Update: I can replicate this issue more consistently if the page that hosts the webpart is loaded in an iFrame.