I took a look at this a few years ago when considering a tool. Back then it turned out every button on a ticket needed to query the server as to whether it had

I took a look at this a few years ago when considering a tool. Back then it turned out every button on a ticket needed to query the server as to whether it had permission to show. Just a terrible architecture. We went with Asana. I miss the ability to create epics and do proper sprints, but at least the things load when you click on them.