While looking into this it appears that when configuring vRO to "Install vRO customization" you are telling vRA not to use vRA Designer workflows for these state changes. I could see that there could be conflict between using the same state change twice, i.e. WFStubBuildingMachine, once in vRA Designer and another time in vRO - although they would presumably not share the same name.
How does this work if you can use both?