Setting Monday as the first day of the week does not work on the new issue view

Following the steps described here does not reflect when using the new issue view.

Workaround:
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.