String field shows up in Discovery but not in Visualize

Elastic Stack Kibana
2

When you say;

I'm assuming it's more than 4 hits?

If the default source limit in elasticsearch is 1000 characters (I'm not sure), why would you explicitly set that? I know I've done tests with string fields over 4000 characters long. Maybe 8000.

See See Field maxlength?

Regards,
Lee