issueLinkType JQL clause given incorrect results when using != or NOT IN

Issue Summary

JQL suggested in public documentation doesn't for NOT IN and != operator work with issueLinkType clause.

Steps to Reproduce

1. Run following JQL

   issueLinkType IS EMPTY OR issueLinkType != blocks

Expected Results

Returns issue with that have a issueLinkType other than blocks.

Actual Results

JQL ignores first clause. It returns results only for issueLinkType != blocks clause. This means: all issues that have value in field, but that value is not blocks.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available