Oauth login in MS Teams 3rd party app is showing white login screen for some users on desktop

Hi, we have occasional reports from our users complaining that they cannot log into our tab application using MS OAuth. This happens very infrequently, and ONLY on the Teams desktop client - Teams web client login always works fine. The symptoms of it seem to be similar to https://techswift.org/2020/05/04/how-to-fix-a-blank-login-screen-in-microsoft-teams/,however this specifically is the login button inside the tab of our own Teams app, not the Teams application itself.

We have actually been able to reproduce this on one of our own internal company users, although we are not sure how the user got into that state. This is a screenshot of the login experience (the login popup stays blank):

The code we use to start the authentication flow is the recommended one:

microsoftTeams.authentication.authenticate()


The package versions we are using for MicrosoftTeams and ADAL are at least up to date to the ones used in the sample code from Microsoft: https://github.com/OfficeDev/Microsoft-Teams-Samples/blob/main/samples/tab-sso/nodejs/src/client/views/auth-start.pug , so I believe that is not the issue either. (I am aware that ADAL has not been supported for a while, but it seems like Microsoft samples continue to use it for tab authentication).

Summary
- 1-2% of users are not able to log into our Tab application using the above code, and are stuck with a white screen, on Teams desktop client only
- 100% of users, including affected ones, are able to log into our Tab application on Teams web client correctly

We are trying to focus on resolving this issue for our users, is there any recommended direction we can take or at least information we can provide to our users experiencing this?