Following the steps described here does not reflect when using the new issue view.
Turn off the new issue view by clicking your avatar(bottom left corner of Jira) > Personal settings. Under "Jira labs" - turn off the toggle switch.
Direct path: https://<instance_name>.atlassian.net/secure/ViewPersonalSettings.jspa
If you are using next-gen projects where it's not possible to disable the new view, you can check the tickets directly on Issues and Filters where it will show the old view.