Emoticons not appearing correctly in Confluence
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
Instead of images, Confluence is displaying raw HTML.

Cause
XXS protection for plugins is enabled by default. This is a way of preventing plugins from inserting arbitrary HTML into a Confluence page.
Resolution
Visit Confluence Admin > Security Configuration
Click Edit at the bottom of the page
Uncheck "XXS protection for Plugins"
Save the page
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