Issue detail view: unable to add icons to "Description" field

Summary

The "Issue detail view" doesn't allow for icons to be added to the "Description" field.

Available icons in the "Wiki Style Renderer" include:

Steps to Reproduce

1. Navigate to the appropriate board
2. Select an issue and edit the "Description" field to include an icon - e.g. ""

Expected Results

• Icon displayed correctly
  

Actual Results

• :) is displayed instead of ""
  

Notes

• "Wiki Style Renderer" enabled on Field Configuration
• After reproducing the issue, navigate to the issue directly and edit the description field; an escape character has been added to nullify the icon:
  

Workaround

• Navigate to the issue directly and edit the "Description" field there - i.e. https://<instance_name>.atlassian.net/browse/[PKEY]-[ISSUENUM] OR
• Navigate to your profile(https://<instance_name>.atlassian.net/secure/ViewProfile.jspa) and disable "Issue detail view"; this is a per-user setting(each end user will need to make this change themselves)