Issue occurs if the following steps are used:

1. Attributes are created within a single-selection list with elements that have no weights.
2. The Attribute is applied to a test:
   1. Go to Tests
   2. Assign Attribute to test
   3. Value assigned is my_first_element_in_list.
3. Then a filter is created with the criteria:
   1. "Test attribute - myAttribute > my_first_element_in_list
4. This filter is applied to the test section

This occurs because a value should always be set for an attribute if using mathematical equations.

As a Workaround:

1. Assign the attribute a value of "0" - This will allow for mathematical equations to be used for attribute.

   OR

2. Upgrade to SCTM 16.0

This issue was resolved in SCTM 16.0.

SI: 2803901