I think I understand now.
In the logstash template you have:
"index_patterns": [
"event-%{+YYYY.MM.dd}"
],
Where I believe it should be:
"index_patterns": [
"event-*"
],
So the logstash template is not applied to your index when the index is created the first time which explains why you have all default elasticsearch behavior.
Also, I don't understand why you have been saying that the index name is Input-2018.10.13 if actually the template is applied on event-*. That does not make sense to me.