Unit tests are executed twice in Test Results panel

When I load (or recreate) this project: AutoTesting01.zip I only get 1 unit test in the Tests panel  (see QTCREATORBUG-19314). Executing the tests works fine.

If I change the order of the QTest::qExec calls in main.cpp the panel shows both test groups.

From this:

res += QTest::qExec(&tg1, argc, argv);

res += QTest::qExec(&tg2, argc, argv);

To this:

{{ res += QTest::qExec(&tg2, argc, argv); }}

{{ res += QTest::qExec(&tg1, argc, argv);}}

I got the 2 groups as expected:

Now running the tests in the Test Results panel shows the results twice:

It's the same if running the tests from Tools > Tests or the Tests panel.

Furthermore if I disable 1 group:

And I run only selected tests, I got both groups executed (only once):

Output is fine when I run the executable.