I was able to replicate the issue. I have logged a JIRA ticket with the developers for them to address this. You can access UE-53197 at anytime to check the status of the bug.
I see the resolution of the issue is set to “by design”. Can you elaborate on that? The abort flags are disabled explicitly in source code, but there’s no explanation as to why that is the case. What would break if I were to just simply subclass UBTDecorator_DoesPathExist and unlock those flags myself?