geoip string HAPROXY if request_header_x_forwarded_for is an Array of IP's not working

Description

the source for geoip has an Array of ip's like:
173.3.2.1,193.3.2.5

the documentation say that if the field is an array, only the first value will be used. but its not working
i have for example HAPROXY loging which has the field "request_header_x_forwarded_for" and put a comma between the IP's
and geoip cant understand it as a source =>

Environment

None

Status

Assignee

Logstash Developers

Reporter

AlenA

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Affects versions

Priority

Configure