Failure to @mention user with recent email address change

Passing the below via 6. API Documentation - jira 3.9.4.dev1+g3a630c5 documentation through the Jira API fails to properly mention testuser@company2 who’s email address recently changed from testuser@company1 to testuser@company2.

The comment is added, and bob@company1 is mentioned properly, but the second user simply shows @unkonwn.

jira.add_comment("KEY-12160" ,'[~bob@company1.com], [~testuser@company2.com]')

Welcome to the Atlassian developer community @MathewLederman,

The pycontribs library that you linked is not built or maintained by Atlassian. I have previously offered some of the reasons I recommend against it, and some alternatives:

Like the linked thread, there might be a REST API bug, but that’s very hard to know without a reproduction via a “naked” REST API request, like using curl.