Steps to reproduce the issue

Create a scheduled task with Execution Rule on Manual
execute the command line scheduler:list

Expected result

Table with 'Next run' for above task set to Never

Actual result

'Next run' set to 'DUE!'
PHP Deprecated: DateTime::__construct(): Passing null to parameter #1 ($datetime) of type string is deprecated in libraries/src/Date/Date.php

The deprecated warning also shows in the Tasks view when a task crashed.

System information (as much as possible)

joomla 5.1
php 8.3

Additional comments

As a site note, The Captions 'Test Task' and 'Run Test' in the Tasks view is a kind of misleading.

It suggests a kind of dry run, while the tasks are actually executed. So 'Run Task' and 'Run' would be more appropriate.