Default columns breaks all columns.

[thefrosty]

From version 1.3 to 1.3.1 the added default columns seems to break all columns registered by other plugins and if no custom columns are registered as well.

In order to get around this I currently set the first defaults columns array to $default and then did a $columns = array_replace_recursive( $defaults, $columns ); Not sure that's to final and best way, but it currently takes care of the issue.