Duplicate rows in Test Results of Qt Creator

I am experiencing difficulties in creating a Unit Test project for my project. In the test project, I have to test many classes. The output of the test application works as expected (app-output.txt).
However, the output shown by Qt Creator incorrectly shows duplicate areas (QTCreator-output.png). I also attach the complete output (QTCreator-output.txt).
The problem occurs when I add more classes to be tested in the main:

• if I only test one class, everything is OK
• if I test two classes (like the attached hello world), all the test classes are executed twice in Qt Creator (does not happen in the actual output)
• if I test three classes (like the attached hello world), all test classes are executed three times
• so on...

Qt Version: 5.15.1 MinGW 8.1.0 32-bit