Custom emojis not printed in PDF or Word Export

Issue Summary

This is reproducible on Data Center: (yes) / (no)

The customer is facing an issue with custom emojis, they aren't displayed in the Word or PDF Export. Instead, it shows ":flow1:", ":flow2:" etc.

Customers have an Issue when Exporting some Pages to a PDF or Word, that it doesn't print the Icons / Symbols from the PDF

It looks like in PDF Word (it shows the Icon as flow1: or :flow2: and you see how it actually looks like in Confluence with the Symbols.

Steps to Reproduce

1. Create a page and include a custom icon 
2. Publish the page
3. Export the page to PDF/Word

Expected Results

It should display properly in the PDF export

Actual Results

It looks like in PDF Word (it shows the Icon as flow1: or :flow2: and you see how it actually looks like in Confluence with the Symbols.

Workaround

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