If we go to a differential like https://phabricator.khanacademy.org/D15010, it says 'older changes are hidden.' When we click on https://phabricator.khanacademy.org/transactions/showolder/PHID-DREV-ozvnqvasqqxgbwiv7t3a/?after=219387 it says
| Argument 2 passed to DifferentialTransactionComment::sortAndGroupInlines() must be an array, null given, called in /home/ubuntu/internal-webserver/phabricator/src/applications/differential/view/DifferentialTransactionView.php on line 118 and defined
We expected it to show older comments instead. :-)