Bollocks, I'm afraid mine doesn't, and every one of my friends doesn't, the light for the abs has a specific test criteria laid down by ford with regard to light function, your tester is BREAKING THE LAW and needs to have his license removed.
The test is VERY clear a illuminated ABS light after starting is a FAIL it's that simple, bit like your tester.
If you care to tell me who it is I'll gladly report him for you, but I fully suspect you know this anyway.
tabetha