Sometimes you have a misbehaving system. Stopping pipes with stop button and starting again works some time. Stop signal (stop button) is not intrusive, it waits its turn, so if its stuck waiting for an answer that does not come the stop will never be acted upon. Now forcefully restarting subnode is only option. But this is not something for "normal" users. A forceful stop option would be a good option for this. E.g. in form of a dropdown alternative for stop button.
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