Symptoms
ATF Test is failing due to a client-side JavaScript error.
Release
KP5
Cause
Only one UI Policy Action is associated with the policy itself and it is hiding a Container variable for the Item. The code that executes the UI Policy Action during the ATF test is specifically looking for a Container object and attempting to set the visibility of the variable to "false".. However, because the container is NULL, the style is undefined. which produces this error.
Resolution
Instead of hiding the entire container in the UI Policy Action, hide the individual variables.