Teams Desktop does not show App in register

[German_Chris]

I have an (Power)App added to an Team. 
I`m logged in as guest (I have a guest for testing and an member account) 

In Teams Web-Version and in the Teams Mobile (Iphone) Version the App is shown in the register,
in the Desktop App not.... Why?

[#2]

Perhaps this thread could help? https://techcommunity.microsoft.com/t5/microsoft-teams/allowed-apps-not-showing-up-in-teams/m-p/7780... If that is not the issue, you might open a ticket on Answers (https://answers.microsoft.com/) where they can help you further troubleshoot.

[#3]

@Laurie Pottmeyer Many thanks for your answer.
Meanwhile, the app is displayed correctly. Maybe this was just a temporary problem?!