ATF - Order Item in SP is not submitting

[BeateN]

Hello,

I'm quite new to ATF and I have an issue with submitting an Order Item in SP. 

To show you the problem, I simplified my test case. It contains 3 steps:

1. Impersonate user (I know, I'm not supposed to do that - usually I create the test users)
2. Open a catalog item in Service Portal
3. Order a catalog Item 

Doing those steps with the impersonated user manually works just fine:

But when running the steps in ATF, the order item is not submitting. It is stuck on the modal. 
I tried to add some timeout in the step - but the modal stays even for the 10 minutes debug pause. 

In parallel I checked if the request was created anyway - but no luck. 

What is interesting: the log says it was successfully created:

Any idea why this is happening and how I can solve it?

Thanks in advance,

Beate

[BeateN · Accepted solution]

Solution found: The request is acutally submitted, it just seems to be stuck.