can't load Sprite from spritealtas not "directly" include in a group

my load code

public AssetReference spriteRef1;
void Start()
{
    spriteRef1.LoadAssetAsync<Sprite>().Completed += (async)=>
        {
            img1.sprite = async.Result;
        };
}

when the spriteatlas is dragged to group directly , it works fine ,img1 display right .

however ,when i drag spriteatlas 's folder to group ,

i get error like this:

Exception encountered in operation Resource<Sprite>(common.spriteatlas[bg]), status=Failed, result= : Unable to load asset of type UnityEngine.Sprite from location Assets/Res/images_pak/common.spriteatlas[bg].
UnityEngine.ResourceManagement.Util.DelayedActionManager:LateUpdate() (at Library/PackageCache/com.unity.addressables@1.16.7/Runtime/ResourceManager/Util/DelayedActionManager.cs:159)

please help

unity :2019.4.10f1
addressables: 1.16.7

I’ll forward this to the team for some guidance!

Looks like regression? [1.5.0] Sprites failed to load with LoadAssetAsync - #22 by iamarugin

This error start appearing again since v1.16.1, including 1.16.6 and 1.16.7

The team agrees that there looks like some regression going on. Can you file a bug report for us so that the team can have a closer look at what you’re experiencing?

ok ,i just filed