How to use Dissect to handle a newline

[akira]

I Just want split a message into two lines, it is a simple case, but i didn't get the result
(according to: https://www.elastic.co/guide/en/logstash/5.6/plugins-filters-dissect.html#plugins-filters-dissect-mapping)

and i get the bad result like:

Too weird

[akira]

'field1' get empty string, while 'description' lost a character 'c' from message.

[Badger]

I would have expected to get a _dissectfailure from that. Remove the double quotes from the dissect mapping. They do not appear in the message.