No output when running tests on Windows

When running a test executable (from Powershell) on Windows, no output is shown. Not even with the -v2 flag. Neither did help setting the QT_LOGGING_TO_CONSOLE environment variable.

As soon as I connect the Visual Studio Debugger, the output gets logged to the Debug Console (not stdout).

I've create a reproduction repository: https://github.com/jdoubleu/QtTestBug124166 . As you can see from the CI run on Windows, there's no output: https://github.com/jdoubleu/QtTestBug124166/actions/runs/8583319745/job/23530532183 (open the "Run Tests" step). While on Linux, there's one: https://github.com/jdoubleu/QtTestBug124166/actions/runs/8583319745/job/23522384067

I've found these related issues:

• https://bugreports.qt.io/browse/QTBUG-41239
• https://bugreports.qt.io/browse/QTBUG-34630