count() for relation with viaTable buid two queries with IN (....)

What steps will reproduce the problem?

Trying to get count of records for relation with viaTable

public function getPictures()
{
        return $this->hasMany(Picture::className(), ['id_picture' => 'id_picture'])
                    ->viaTable('dbl_album_picture', ['id_album' => 'id_album']);
}

like that

$album->getPictures()->count();

What is the expected result?

SELECT count(*) FROM dbl_album_picture WHERE id_album=1

What do you get instead?

SELECT * FROM dbl_album_picture WHERE id_album=1
SELECT COUNT(*) FROM db_picture WHERE id_picture IN ('13', '14', '16', '17', '18', '19', '20')

Additional info

Start with the getPictures() relation using viaTable('dbl_album_picture', ...) and the $album->getPictures()->count() call shown in the issue. Compare the generated SELECT statements with the expected single count query; done means the count operation no longer performs the extra relation lookup and produces the expected result.