tagging users by using "@" don't work with warning symbol in Jira description field.

Issue Summary

Tagging users by using "@" doesn't work with warning symbol in Jira description field.

Steps to Reproduce

Mention a user in the description field between the image 

this is @mention user

Expected Results

The description should be saved correctly

Actual Results

The description is being saved incorrectly

Workaround

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