Category fields (radio buttons) are not being populated

Category fields are not being populated when they are radio buttons (checkboxes work fine).

Maybe this crashed after fixing this topic: https://wordpress.org/support/topic/multi-select-checkbox-woes?replies=3

You can make checkboxes and radio buttons both work by changing the following function in the file gravityforms-update-post.php

Before:

public static function return_category_field_value( $value, $field )
{
	return (! empty(self::$settings['cat_value']) ) ? self::$settings['cat_value'] : $value;
}

After:

public static function return_category_field_value( $value, $field )
{
	$result = (! empty(self::$settings['cat_value']) ) ? self::$settings['cat_value'] : $value;

	if ( 'radio' == $field->inputType ) {
		return $result[0];
	} else {
		return $result;
	}
}

https://wordpress.org/plugins/gravity-forms-post-updates/