One may clear user preference settings (impacting the UI) using the Preference tab when managing a user. You may wish to clear these out when encountering UI issues.
Steps
1. Sign in as a user with at least the Security Administrator capability global role assignment.
2. Go to MANAGE > Users in the banner.
3. Click a user.
4. Go to the Preferences tab.
5. Use Delete to clear one of the preferences.
6. Use Remove all at the top of the list to delete all the current preferences.