Non-cloud Jira as a workflow manager is pretty good. It’s intuitive, powerful, quite fast (again, on-premises version only). But my current company uses the cloud version as an agile project management tool, and it’s awful just because it is soooo slow. And they keep changing the UI, sometimes with good ideas, sometimes not, but because it is so slow nobody wants to use it to update their progress. For example I update my times once a month because it’s an awful experience, and just use a spreadsheet the rest of the time.