I am having problems with the stress plot option "Show plot only on selected entities".  This my sequence of operations that generates the error.

I generate a new stress plot, I check the checkbox next to "Show plot only on selected entities", I choose the faces of my model I want, I press OK, and the stress plot is of everything in the entire model.  I click "Edit Definition" on the newly defined stress plot and the checkbox next to "Show plot only on selected entities" is unchecked.

The above problem is happening to me when I do a Pressure Vessel Study, but not when I do a Static Study.

Does anyone know how to fix this issue?

Thanks.