Why don’t they just get on and do their job? People stuff can be exasperating. Life would be so much easier if people just do what they’re told, to the level as expected, in a time frame that fits expectations. How often does this happen? Not often enough for people leaders to feel at ease with their direct reports.
It’s sad case of PICNIC - Problem In Chair, Not In Colleague. Any people problem should start with a solid look at oneself first. Thankfully there is a fundamental that you can turn to every time: read the manual.