Relation Manager: Can't modify AttachAction

Hopefully this is not livewire bug (again), I can't see it works:

AttachAction::make()
  ->modalHeading('Lorem')
  ->preloadRecordSelect()
  ->recordSelect(fn ($select) => $select->placeholder('Foo'))
  // and so on

AttachAction::make()
  ->modalHeading('Lorem')
  ->preloadRecordSelect()
  ->recordSelect(fn ($select) => $select->placeholder('Foo'))
  // and so on

Relation Manager: Can't modify AttachAction - Filament