Cross-storage does not work in an Excel add-in

[chengtie]

I have been using cross-storage for a while for an Excel add-in. It works for almost all the tasks except one odd problem. To reproduce the problem:

• Sign in with third-party authentication such as Google. A dialog is opened by Office.context.ui.displayDialogAsync. The sign-in works and the dialog is closed.
• Then I try to sign out, which cannot work, and I can see the following message in console.
  
• If I reload the add-in, I can still see the signed-in user on the top right. Then I sign out, this time the sign-out can work.

I try to debug the problem:

• If I modify const storage = new CrossStorageClient("https://www.funfun.io/htmls/hub.html", {}); to const storage = new CrossStorageClient("https://www.funfun.io/htmls/hub.html", { 100000 }); in the code, the sign-out (without reloading the page) will go infinite.
• The url of the add-in is https://v6.10studio.tech/#/ai-formula-editor-addin, which we can launch in a browser as well. We can sign in with Google and sign out without this problem.

Does anyone know what may be the cause of the problem in the Excel add-in?