I've been learning / using DevOps for the past four months and find it "quite good", and have previously used Jira, although not in great detail. I'm making th

I've been learning / using DevOps for the past four months and find it "quite good", and have previously used Jira, although not in great detail. I'm making the effort to learn it in increasing detail as it's the company-wide chosen system. I'm interested to know what made / makes it a nightmare for anyone else. (And I'm no fan of Microsoft as a whole)