I was able to run the Cache terminal from the command prompt with the following command, in the namespace that I provided in the brackets:
cterm /console=cn_ap:ENSEMBLE[TEST_1]
But the command suddenly stopped opening the terminal in the correct namespace. It just opens it in the default namespace. I tried it with different namespaces or invalid namespaces, it always opens the terminal in the default namespace now.
I cannot figure out what is causing this behaviour.