Unit test traffic light colours are wrong

I have a test case with a single test that fails. The result of running this case is shown in the attached file.

Surely, since the test TestReportEventIncidenceSQLBuilder::incidencePlotIncidenceAggregate fails and has a red traffic light when the test is opened, the test case incidencePlotIncidenceAggregate should also have a red traffic light, and the program TestReportEventIncidenceSQLBuilder should have a red light at the top level?

This isn't much of an issue in this specific instance, but we currently have 368 tests (and growing fast) and when the GUI reports 367 passes, 1 fails it's quite hard work to locate the failure if all the top, and first level lights are green.

I updated to 4.8.2 last week some time and don't recall this behaviour on 4.8.1 or earlier versions.

(I had an issue attaching the file a few minutes ago, so this may be  duplicate report. APologies if so.)