potential bug: can't do 2 loadasync consecutively on the timeline

Unity Engine
,
1

check this out, might be a timeline bug, haven’t found a known limitation on that

(second async gets lost, doesn’t even start actually, might require the first one to complete?)

2

1322239

3

Nice use case.
Thanks for the repro.

4

extra repro to isolate vanilla c# from timeline behaviour

code

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class _TestSceneLoading : MonoBehaviour
{
    public AsyncDataPipe_SO sceneSO;
    public SceneReference scene;
    public GameObject activateOnLoading, activateOnActivating;
    public float delayBeforeLoad = 0, extraDelayBetweenLoadAndActivate = 0;

    public void Load()
    {
        StartCoroutine(LoadThenActivateCO());
    }

    IEnumerator LoadThenActivateCO()
    {
        yield return StartCoroutine(LoadCO());
        yield return StartCoroutine(ActivateCO());
    }

    IEnumerator LoadCO()
    {
        yield return new WaitForSeconds(delayBeforeLoad);
        activateOnLoading.SetActive(true);
        activateOnActivating.SetActive(false);
        sceneSO.async = SceneManager.LoadSceneAsync(scene, LoadSceneMode.Additive);
        sceneSO.async.allowSceneActivation = false;
    }

    IEnumerator ActivateCO()
    {
        yield return new WaitForSeconds(extraDelayBetweenLoadAndActivate);
        while (sceneSO.async.progress < 0.9f)
            yield return null;
        activateOnActivating.SetActive(true);
        activateOnLoading.SetActive(false);
        yield return null;
        sceneSO.async.allowSceneActivation = true;
    }
}

so this button is calling both loadings, each one staggered in time like so
load 1
load 2
activate 2
activate 1

this works flawlessly in the editor and on switch
scene loaded size 300MB