Blinking property of referenced String indicator does not work under Unit test Framework

Attached is a project which demonstrates, what I believe is a bug.

When I start "VITSetup.vi" directly such that the VI Under Test (VIT) "BlinkRefnum.vi" is called directly, the string indicator from which I pass a refnum to the VIT correctly blinks on the "VITSetup.vi" front-panel.

But when I start "VITSetup.vi" as a setup VI within a test-case of the Unit Test Framework (UTF), and pass a parameter into "VITSetup.vi" to cause it to pass the string-indicator refnum back out for passing into the VIT, the string control does not blink.

Visibility property works. Setting of a Value property string works. But blinking property does not.

If I read the property it says it is set but the indicator on the front-panel does not blink.

Does anyone have experience of this problem?

Is there a workaround?

I am using LabVIEW 2012 SP1 with Unit Test Framework Toolkit 2012.

Thanks.