The other tester was Adrian who works at HQ - so he tested it on his local dev site 10 mins after the fix was integrated instead of waiting for the QA site to be updated.
Normally an issue like this would be reset and have the standard message:
"Thanks for running this QA test. The bug causing it to fail has now been fixed, so the test can be reset and run again.
Please note that if you are using http://qa.moodle.net
for testing, you will need to wait for the site to be updated at 00:00 UTC in order to test the bug fix."
added to it - but Fred just got Adrian to test it for him in this case.