– The Filter issues persist when your collections come up with multiple tables by join queries.

Please check the following changes in the collections file as below:
– You can force the table alias using this addFilterToMap() Method. 
– Apply this addFilterToMap() method in your _initSelect() Method of your main collection class.

Add the following code to Your collection class :

protected function _initSelect()
{
    $this->addFilterToMap('xyz', 'main_table.xyz');

    parent::_initSelect();
}

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