comment edit fails if there's s space at the end

[tzarebczan]

i.e. {"jsonrpc":"2.0","method":"comment_update","params":{"comment_id":"5d35b5eedf7a8c90cc06e2dfb99ad0e66efa7333d0911d80ec8d460fe8abc6a2","comment":"What happens when this thread gets really long? Probably should collapse for viewers, with a \"show replies\"? "},"id":1584736786511}