Second level nest not associated with parent

[alanhartless]

I have something similar to this setup with a Customer, Account, and User resources.

Customer:

// ...
 NestedForm::make('Accounts')
                ->hideWhenUpdating()
                ->open(true)
                ->heading('{{index}} Account')
// ... 

Account:

// ...
NestedForm::make('Users')
                ->hideWhenUpdating()
                ->heading('{{index}} User')
// ...

Customer is a oneToMany relationship with Accounts and Accounts is a ManyToMany relationship with Users. I'm able to create all three in the Customer form and the Account is associated with the Customer. But the User is not associated with the Account. Is this setup possible?

Also UI bug (maybe?), when I add a new user which has an index of 1.1, the form is collapsed no matter what I set for NestedForm::make('Users')->open()

[alanhartless]

I found a work-around by doing this

NestedForm::make('Users')
                ->hideWhenUpdating()
                ->heading('{{index}} User')
                ->afterFill(
                    function ($request, $model, $attribute, $requestAttribute, $touched) {
                        $users = $touched->pluck('id')->toArray();
                        $model->users()->syncWithoutDetaching($users);
                    }
                )