Bug:
After some investigation, I have found, the problem is in /main/getConfig endpoint that returns not decoded data in result (wrong_response.png).
Attaching also result of my console.
After removing wrong custom project works correctly.
Status changed from New to Waiting for information
Attachment image-0.png added
Maybe your custom project was corrupted in some way. Can you attach it to reproduce the bug ?
Btw. the issue is not in the "Custom workflow" UI, but when you have this custom workflow, then Retester doesn't work (see steps to reproduce and the bug description)
Attachment image-0.png added
Attachment image-1.png added
I will take a deeper look on Monday. /main/getConfigs works, currently I have no idea what is wrong :)
Status changed from Waiting for information to Fixed
The attached custom project works fine, it is not corrupted.
There was an internal bug. It will be fixed in beta 137.