Hi!
We try to create a very simple integration for Microsoft Teams. The only thing the app does, is showing the ticket-portal as an embedded website. The app is running inside MS Teams on the left side bar and is created with "Teams App Studio". (It is like playing with Lego to create apps there
)
The app works with a random taken URL like google.de but not with the URL of the jira ticket portal like https://xxxxxxxxxx.atlassian.net/servicedesk/customer/portal/1
Any ideas why it is not possible to show the ticket portal? I found s.th. about 'X-Frame-Options' which seems to be responsible for blocking iframe-embedded Jira pages. We are using the cloud-version of Jira and so cannot manipulate the sourcecode.
I rifled the whole web for finding a solution
But no way.. Hope you guys have an approach. 
Cheers,
Franz