Custom App with tab capability working in developer mode but not in normal mode of desktop app

YesMamatha-MSFT. These are my thoughts after investigating the issue from my end.  The sso login mechanism is not working properly with the default preview of teams desktop app. It works fine in the developer preview and teams web app. Now, this could be because of different settings between developer preview and default preview. Not sure. I am trying to understand how is developer preview different from default preview. Hope I was able to make it a little clear. Any help in resolving this issue is really appreciated.