Context: https://tour.golang.org/flowcontrol/1

Build version go1.10.

Both the online tour and the one I've downloaded which is run on my native machine (MacOS High Sierra 10.13.3), show that the output of the for loop below is the integer 45:

package main

import "fmt"

func main() {
sum := 0
for i := 0; i < 10; i++ {
sum += i
}
fmt.Println(sum)
}

Where the output should be:

0
1
2
3
4
5
6
7
8
9

I am unsure if this issue has been flagged before, but it could be disruptive for new comers with no prior programming experience.