The Mk 2 Leaf problem is a known issue, which affects the second or third charge, on a long trip. EV forums believe that the next iteration, with the 60kW battery, will have battery cooling, the lack of which seems to be the issue.
The range issue is the same with all EVs. It depends on the weather and how it is driven. Like manufacturer's mpg figures, they are all a figment of some marketing man's imagination.