Ask HN: Are you using a Pivotal Tracker successor? Which one?

In my opinion, Pivotal Tracker was the collaborative planning tool with the best feature set, usability and presentation. It was highly opinionated, but on the flip side gave you a baked-in process that just worked (at least in my team (1 product owner + 3 developers)

A while ago, there already was a discussion on HN [1] about a list of projects that implement PT clones [2].

Does anyone here use one of those? Which one did you chose and what are your experiences, what is still missing?

[1] https://news.ycombinator.com/item?id=43378925

[2] https://bye-tracker.net