PRINT date format not consistent

Grocery CRUD Enterprise
1

Enterprise v3.1

The date format of a column in a datagrid is correct on the screen dd-mm-yyyy.
But if I try to print that datagrid from the GroceryCrud print button, the output format changes to yyyy-mm-dd.

I have tried:
$crud->fieldTypeColumn(‘DOB’, ‘native_date’);
$crud->fieldType(‘DOB’, ‘native_date’);

But nothing seems to fix the issue.
Any suggestions?

Ray