Hello, 
Reopening this ticket in hopes that either of you had some luck in resolving your bug.  I am currently facing the same issue where I can deploy an asset bundle via the local CLI without issue (by deploy I mean the bundle code is written to my workspace and the Workflow is created).  However, when I try to deploy my bundle via an Azure DevOps pipeline it only uploads the bundle resource code but no workflow is created. 

The interesting similarity to @jorperort reported issue is that no deployment.json file is created in the case where the Workflow isn't created (aka the situation in which I use an Azure DevOps pipeline).  I'm not sure why I can deploy the bundle & associated workflow via local CLI when I am authenticated with a PAT but when I use that same PAT in the Azure DevOps pipeline I am unable to deploy the actual workflow (but still in this case the code is written to the .bundle folder I specify).  

Any suggestions would be greatly appreciated.