We've seen in the release notes that since Jira v9.9 there is now a dark feature to enable a new UI for configuring Custom Field contexts.
We wanted to have a look at this in a test environment so we added the following flag in the the dark features admin page (/admin/SiteDarkFeatures!default.jspa):
jira.customfields.configure.modern.ui
Except it doesn't appear to work? The custom field context page is still displaying in the same way as before.
Has anyone else had issues trying to use this dark feature? Am I doing something stupid or looking on the wrong page? Presume is was going to update this view:
secure/admin/ConfigureCustomField!default.jspa?customFieldId=20500