macOS Server - Unable to run Xcode bots, because user is not logged in

Disclaimer: I understand that stackoverflow is development oriented and this might be more a server question, but I think that many developers use CI and this is the right place to reach these developers.

I am using macOS Server app to run a continuous integration.

Since a recent update, which allows you to run tests as a different user, the server is often unable to sign in as the testing user to run the tests.

Expected behaviour would be, that by clicking Switch user button, it would sign in and start running Xcode bots. What happens is that it makes me sign in as the user, but it stays disconnected.

Restarting the machine doesn't solve the issue.

Please see the image for clarification.

I am going to answer my own question as I spend quite a few time trying to solve it.

The only resolution that I found and works every-time is to setup the Xcode app again.

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1. Click Choose Xcode.. and select xcode app that you want to use to run the builds

2. Select the user that you want to use to run the builds

3. Wait for configuration

4. The issue is resolved

Hope this will help somebody!