Can't count right items when sort by bestsellers

[clion007]

Preconditions (*)

1. Magento version: 2.3.3
2. PHP version: 7.1.29; Apache version: 2.4.39; Mysql version: 5.7.26

Steps to reproduce (*)

1. develop a plugin for block of product toolbar to sort product connection by sold quantity use joinleft method of Magento\Framework\DB\Select as below:

$toolbarCollection
->getSelect()
->joinLeft(
'sales_order',
'e.entity_id = sales_order.entity_id',
array('qty_ordered'=>'sales_order.total_qty_ordered'))
->group('e.entity_id')
->order('qty_ordered desc');

2. flush the product page, the total number of connection items display only 1, not the true number, and don't get the right pagination.

Expected result (*)

1. fix the bug and display the true number in amount.phtml;
2. get the right pagination.

I try to fix it override the method of protected function _getSelectCountSql in file \Magento\Catalog\Model\ResourceModel\Product\Collection like below in a new module:

protected function _getSelectCountSql( ?\Magento\Framework\DB\Select $select = null , $resetLeftJoins = true )
{
$this -> _renderFilters();
$countSelect = $this -> _buildClearSelect( $select );
if ( count( $countSelect ->getPart( \Zend_Db_Select::GROUP ) ) > 0 ) {
$countSelect ->reset( \Zend_Db_Select::GROUP );
}
$countSelect -> columns( 'COUNT(DISTINCT e.entity_id)' );
if ( $resetLeftJoins ) {
$countSelect -> resetJoinLeft();
}
return $countSelect;
}

But it does not work.

Actual result (*)

1. only get 1 item of product connection number;
2. can't get the right total page number and display the real pagination.

[m2-assistant]

Hi @clion007. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

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@clion007 do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

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[m2-assistant]

Hi @shikhamis11. Thank you for working on this issue.
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[m2-assistant]

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[magento-engcom-team]

✅ Confirmed by @shikhamis11
Thank you for verifying the issue. Based on the provided information internal tickets MC-30624 were created

Issue Available: @shikhamis11, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.