Throttle and debounce timing diagram maybe wrong

[okmyself]

My device is M1 Macbook Air. I tested it in Swift Playground, but the result does not match the timing diagram. I think the time of the result in the third row is drawn in the wrong place. All codes and results are as follows:

import Foundation
import Combine

let bounces:[(Int,TimeInterval)] = [
    (1, 10),
    (2, 20),
    (3, 80),
    (4, 90),
    (5, 150),
    (6, 160)
]

var startTime = Date().timeIntervalSince1970
let subject = PassthroughSubject<Int, Never>()
var cancellable = subject
    .throttle(for: .seconds(50), scheduler: RunLoop.main, latest: true)
    .sink { index in
        let offset = Date().timeIntervalSince1970 - startTime
        print ("Received index \(index) at \(offset)")
    }

for bounce in bounces {
    DispatchQueue.main.asyncAfter(deadline: .now() + bounce.1) {
        subject.send(bounce.0)
    }
}

Received index 1 at 10. 297373294830322
Received index 2 at 60. 29852819442749
Received index 4 at 110. 29963707923889
Received index 6 at 164. 99856996536255

import Foundation
import Combine

let bounces:[(Int,TimeInterval)] = [
    (1, 10),
    (2, 20),
    (3, 80),
    (4, 90),
    (5, 150),
    (6, 160)
]

var startTime = Date().timeIntervalSince1970
let subject = PassthroughSubject<Int, Never>()
var cancellable = subject
    .throttle(for: .seconds(50), scheduler: RunLoop.main, latest: false)
    .sink { index in
        let offset = Date().timeIntervalSince1970 - startTime
        print ("Received index \(index) at \(offset)")
    }

for bounce in bounces {
    DispatchQueue.main.asyncAfter(deadline: .now() + bounce.1) {
        subject.send(bounce.0)
    }
}

Received index 1 at 10. 309597969055176
Received index 2 at 60 .30997681617737
Received index 3 at 110. 31065487861633
Received index 5 at 164 .84435486793518

import Foundation
import Combine

let bounces:[(Int,TimeInterval)] = [
    (1, 10),
    (2, 20),
    (3, 60),
    (4, 70),
    (5, 110),
    (6, 120)
]

var startTime = Date().timeIntervalSince1970
let subject = PassthroughSubject<Int, Never>()
var cancellable = subject
    .debounce(for: .seconds(50), scheduler: RunLoop.main)
    .sink { index in
        let offset = Date().timeIntervalSince1970 - startTime
        print ("Received index \(index) at \(offset)")
    }

for bounce in bounces {
    DispatchQueue.main.asyncAfter(deadline: .now() + bounce.1) {
        subject.send(bounce.0)
    }
}

Received index 6 at 171 .00314784049988

import Foundation
import Combine

let bounces:[(Int,TimeInterval)] = [
    (1, 10),
    (2, 20),
    (5, 110),
    (6, 120)
]

var startTime = Date().timeIntervalSince1970
let subject = PassthroughSubject<Int, Never>()
var cancellable = subject
    .debounce(for: .seconds(50), scheduler: RunLoop.main)
    .sink { index in
        let offset = Date().timeIntervalSince1970 - startTime
        print ("Received index \(index) at \(offset)")
    }

for bounce in bounces {
    DispatchQueue.main.asyncAfter(deadline: .now() + bounce.1) {
        subject.send(bounce.0)
    }
}

Received index 2 at 71. 99511885643005
Received index 6 at 170 .99344301223755