Yeah I've had nothing but a bad time with Jira, it's slow / high latency and high impact to use - combining that with GitHubs poor UX and I guess they're made for each other :/
If you're talking about process aspects, well.. that's also a business process thing, as to how much information PMs/etc want.
I only read this in passing, but I heard it's the growing pains of changing a codebase intended to run on a single-server and trying to rebuild it into "services" that scale.