DISCLAIMER: i have already reported this bug back on February 23 but nobody took notice of it so i decided to make a new one. im NOT trying to duplicate my other report. maybe that other report got deleted somehow. now on to the bug: this is the reason why the leads break when towing a horse, donkey, or mule; they freeze up after a certain period of time. This happens with foxes even if they are not on leads.
Your ticket is still there (MC-144841). No one is ignoring it, it's just that no one has confirmed or added anything to it yet.