Dark Theme Not Persisting

[Simon Dingley]

After the long long wait for a dark theme in Jira, it finally arrived, which is great. Except, for me and for reasons unknown every time I enable it the change does not persist for long and I can't work out why. Jira keeps reverting back to the white version after a short while which is a real pain. Any ideas on how to find out why and how to fix it?