src/QueryBuilder.php
protected function qualifyColumns($columns)
    {
        foreach($columns as &$column) {
            if(!in_array($column, $this->model->translatableAttributes())) {
                continue;
            }

            $primary = $this->qualifyTranslationColumn($column);
            $fallback = $this->qualifyTranslationColumn($column, true);

            if($this->model->shouldFallback()) {
                $column = new Expression($this->compileIfNull($primary, $fallback, $column));
            } else {
                $column = $primary;
            }
        }

        return $columns;
    }
protected function qualifyColumns($columns)
    {
        foreach($columns as &$column) {
            if(!in_array($column, $this->model->translatableAttributes())) {
                continue;
            }

            $primary = $this->qualifyTranslationColumn($column);
            $fallback = $this->qualifyTranslationColumn($column, true);

            if($this->model->shouldFallback()) {
                $column = new Expression($this->compileIfNull($primary, $fallback, $column));
            } else {
                $column = $primary;
            }
        }

        return $columns;
    }
Qualify translated columns

@param $columns
@return mixed