If i try to open a Service Desk projekt from the navigation pane, jira service desk shows a blank page with no content except the navigation pane. (see screenshot 1)

After some page reloads (Refresh / F5) the page is shown correctly.
This issue only occurs with Service Desk Projekts - all other Jira projects are shown correctly.
The same issue also occurs if i create a new request in the service desk portal. (see screenshot 2) The request is created correctly but the screen stucks as in the given screenshot.
Can you please assist to solve this issue.