running several tests with different compiler args at once does not work

If i run the tests by hand then everything works fine. But if i run the automatic assessment then they don't work anymore.

I added specific files to the compiler args, so that only a subset of classes is compiled for each test. This allows me to run Test individually even if there is a syntax error in the other files.

The project looks like this:

Tester.java (This is the specified main class in the template)
OtherClass1.java 
OtherClass2.java 
...

Then there are tests:

Test for OtherClass1 (compiler args: > OtherClass1.java <)
Test for OtherClass2 (compiler args: > OtherClass2.java <)
...

In the automatic assessment the first test runs fine, and the subsequent tests fail. (The OtherClassX was not compiled and therefore not found via reflection) I also tried:

Dummytest (compiler args: > OtherClass1.java OtherClass2.java ... OtherClassN.java <)
Test for OtherClass1 (compiler args: > OtherClass1.java <)
Test for OtherClass2 (compiler args: > OtherClass2.java <)
...

Which results in a successful Dummytest and Test for OtherClass1. But all other tests still fail.

https://yapex.informatik.uni-halle.de/#/doeditor/exercises/5d47683o8l95-8954

UPDATE: The bug also appears, if all the run all tests button is used in the gui. But with a slightly different error message: “write-error” -> “can’t write to process”