@ztrubow I run several tries on Windows and MacOS with cascading loops with a chunk loop at the start. I was not able to reproducde the problem. I might have to get back to my workflow where it originally appeared and reconstruct that (other components have been involved, it was this thread) - unfortunately instead of reporting the (possible) bug at the time I just made a workaround without saving the problem in a reproductible way.
It does not seem to be just cascading (chunk and additional) loops but something else inbetween them that makes tthe chunk loop start ‘think’ it is still running and freezes the whole thing.