In notification.php
on line 703 there’s this line: var event = document.getElementById( 'event' ).value;
.
In some cases the result from getElementById
is null and the resulting value
property can’t be accessed. This results in merge tags not being displayed. It can be fixed by adding a value check like this:
var event = document.getElementById( 'event' ); event = event ? event.value : null;
This bug is present in version 2.8.1.