"Project Roles" header in "Viewable by" select list in Attach Screenshot screen is not translated

The "Project Roles" header in "Viewable by" select list in Attach Screenshot page is not translated even though the user has changed the language in the user's preference. Please see the attached screenshot.

Steps to reproduce:

1. Change the language in user's preference from English to French.
2. View an issue and click on the "Attach Screenshot" operation.
3. Select the "Viewable By" select list.

This problem appears in all language packs installed in JIRA.