Some complex queries fail for advanced global search
https://sentry.gitlab.net/gitlab/gitlabcom/issues/1468715/?query=is%3Aunresolved
Complex ES query ("slack integration" for example) for issues scope fails with
"caused_by": { -
"type": "illegal_state_exception",
"reason": "field:[title] was indexed without position data; cannot run PhraseQuery"
}