Thanks for sending the requested information Your e-mail was replied two hours ago by the support team, this is a copy of the answer:
Thanks for sending the requested information. Please edit Classes/Phpdocx/Utilities/BulkProcessing.php and in the method replaceTextContents (around line 898), replace:
$stringDoc = str_replace('__LINEBREAK__', '<w:br />', $dom->saveXML());
$stringDoc = str_replace('__LINEBREAK__', '</w:t><w:br /><w:t xml:space="preserve">', $dom->saveXML());
And try again, this change should fix the issue with LibreOffice and BulkProcessing when parseLineBreaks is enabled. The same change has been applied to the current testing branch.