Jira python API 3.5.0 search_issues() call modifies the fields parameters

[jmoller2]

While using the search_issues() call in my code, I noticed that if I provide the field "key" in the list of fields, the field's value will have been changed to "issue_key" after the call. Example code before:

fields = ["key"]

print(fields)

jira.search_issues(query, fields=fields)

print(fields)

The resulting print:

['key']
['issuekey']

Is this a known bug and has it been fixed? I would not expect the library to modify the provided parameters.

[jmoller2]

The same issue does not seem to happen on version 3.1.1.