When doing code coverage analysis, the numbers from sub-hierarchies does not seem to
be summed correctly. If some item type is not present in current hierarchy, numbers from
sub-hierarchies does not seem to be counted correctly. E.g. the functional coverage from
top in my case is:

But if I go one hierarchy down (to the DUT), I do have functional cover items there:

I would expect getting these numbers counted in the overal functional coverage for DUT in the
first figure.