Unable to execute JUnit 5 Tests with whitespaces in project path

[jsc57x]

There is a bug in Eclipse 2023_12 (I don't know which pde version corresponds) when trying to run JUnit Plug-in Tests with whitespaces in the absolute path of classes if the launch config is set to run all tests in a package.
You can find a minimal reproducable example here: https://github.com/jsc57x/MissingFragmentHost/tree/JUnit5Runner
In both fragment test projects there is at least one launch config for running all available tests. The launch config TestClassWithWhitespaces in Fragment test project does not work and shows
java.net.URISyntaxException: Illegal character in path at index xx: file:/<omitted>/MissingFragmentHost/Fragment Test Project/bin/test/test/
where xx is the first occurence of a whitespace in the path.