Adding multiple columns to the stream table using filters only display the last column correctly

[Nikschavan]

Bug Report

All the columns before the last one just display the column title as the column value.

Here is a sample code which can be tried to reproduce this case -

add_filter(
	'wp_stream_list_table_columns',
	function ( array $columns ) : array {
		$columns['test_column_1'] = 'test_column_1';
		$columns['test_column_2'] = 'test_column_2';

		return $columns;
	}
);

add_filter(
	'wp_stream_insert_column_default_test_column_1',
	function ( string $column_name, \WP_Stream\Record $record ) : string {
		return 'test_column_1  - ' . $record->ID;
	},
	10,
	2
);

add_filter(
	'wp_stream_insert_column_default_test_column_2',
	function ( string $column_name, \WP_Stream\Record $record ) : string {
		return 'test_column_2 - ' . $record->ID;
	}
	,
	10,
	2
);

add_filter(
	'wp_stream_register_column_defaults',
	function ( array $new_columns ) : array {
		$new_columns[] = 'test_column_1';
		$new_columns[] = 'test_column_2';

		return $new_columns;
	}
);

In this snippet, I am adding two columns to the stream table but the first column only displays the column name test_column_1 in all the columns and the second column displays the correct value test_column_2 - <record-id>

Any ideas on how this can be fixed?

Expected Behavior

All columns that are added display the correct expected value.

Actual Behavior

Only the last column displays the correct value for the record.

[Nikschavan]

Created a PR #1185 which fixes this issue