Ask HN: Why is Confluence Wiki Search so bad?
I'm my experience almost everything that Atlassian makes is total garbage. Bitbucket, Jira, Confluence, etc. are all horribly slow to the point of being unusable and most of it has very poor UI/UX.  I pretty much don't recommend anything they make.  It's not surprising at all that a fundamental feature of a wiki, search, doesn't work very well.