Livewire 3 issue in groupBy in mount method

Question

I am trying to use groupBy on Eloquent Collection but livewire giving me error if i try to assign collection to a public variable

public $permissions;

public function mount() {
    $this->permissions = Permission::get(['name', 'id', 'display_name'])->groupBy('display_name');
    //if I assign do not assign it to public variable it worked
    //e.g $permissions = Permission::get(['name', 'id', 'display_name'])->groupBy('display_name');
    //but i need it in the view for looping.
    //if i add ->toArray() or ->collect() it worked.
    // e.g $this->permissions = Permission::get(['name', 'id', 'display_name'])->groupBy('display_name')->collect();
}

The Error:

Method Illuminate\Database\Eloquent\Collection::getMorphClass does not exist.

According to me: when Livewire tries to serialize the component data for transport to the frontend, it might be encountering difficulties with the grouped collection. To work around if I convert the grouped collection to an array before assigning it to the property, it worked but it is an array not collection. But this was not an issue in Livewire 2