Using emoji on a page disables inline commenting

Summary

Using Emoji on a Confluence Page prevents Inline Commenting

Environment

• Confluence 1000.95 (Cloud)
• Confluence 5.8.5 (Server)

Steps to Reproduce

1. Create a Page in Confluence which includes a Unicode-6 Emoji Character (📷 🏈)
2. Attempt to Inline Comment

Expected Results

A comment is added inline to the Page

Actual Results

When attempting to save the Inline Comment, an error appears indicating "Unable to Save The Comment"

Confluence logs show:

2016-05-18 22:43:05,223 ERROR [http-bio-1996-exec-49] [common.error.jersey.ThrowableExceptionMapper] toResponse Uncaught exception thrown by REST service: [com.ctc.wstx.exc.WstxLazyException] Illegal character entity: expansion character (code 0xd83c) not a valid XML character

Notes

Seems to only be affected by Unicode-6 Emoji
Using ⚽️ (not listed in the link above) seems to work

Workaround

Remove Emoji Characters from Page