Description:
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With the low memory limit of 1Mb throwing exceptions silently terminate all browser's output. Exception still visible in the logs and everything works normally in the CLI mode, everything fine in PHP 5.

Used software:
Brew's PHP 7.0.6 (built: Apr 29 2016 04:21:39) ( NTS )
OS X's Apache 2.4.18


Test script:
---------------
<?php
set_time_limit(1);
ini_set('memory_limit', '1M');

echo 'This is output before exception.';
Throw new \Exception('This is exception!');
?>

Expected result:
----------------
Exception and output before it should be visible.