Why SelectFilter need to reload the page to execute the query when selecting a speaker ?

->filters([
                Tables\Filters\TernaryFilter::make('new_talk'),
                SelectFilter::make('speaker')
                ->relationship('speaker', 'name')
                ->searchable()
                ->preload()
                ,

            ])

->filters([
                Tables\Filters\TernaryFilter::make('new_talk'),
                SelectFilter::make('speaker')
                ->relationship('speaker', 'name')
                ->searchable()
                ->preload()
                ,

            ])