Custom Emojis from Confluence aren't appearing in KB articles for portal customers

Issue Summary

In a KB article, emojis added in Confluence aren't appearing in Jira Service Desk with the appropriate emoji.

Environment

Confluence Cloud - New editor

Steps to Reproduce

1. Connect Jira Service Desk and Confluence Cloud
2. In the public article, add emojis to it. E.g: :right: or :left:
3. Check the article in Jira Service Desk

Expected Results

The emojis should appear accordingly.

Actual Results

All emojis show up as empty or :right: or :left:
 

Workaround

Currently, there is no known workaround for this behavior.