Nothing like constantly having to spend 3-5 days of spin up on trying to help another team with their microservices because they have such a severe lack of documentation that I can't just follow a readme to get their projects running. Instead, I have to bug one of their developers to help me get it up and running (because they use non-standard project setups and dependency management), delaying things even more. No matter how much I scream that we need documentation no one makes it a priority.
Did I mention these are microservices written in Golang and I'm a front end developer? And I'm being made to work on back end tasks because we have a crazy high attrition rate and they won't back fill the back end positions.