Hi JC D
Thanks for reaching out to Microsoft Q&A forum support and apologize for the inconvenience.
As of July 2025, as far as I l know, Microsoft has not provided a definitive end date for this transition, and there is no official setting in SharePoint to force a consistent view (tabs or dropdown) for all users. While we understand how inconvenient this issue may be for you but as a forum moderator, my role is to help guide discussions and share information based on Microsoft documentation and community knowledge. Currently, Microsoft has not released any official guidance or documentation addressing this specific issue with this issue.
Meanwhile, thank you for your feedback and suggestion. We appreciate your input, and we are always looking for ways to improve SharePoint.
To more conveniently switch between the new and old lists user experience, I recommend you open a service request with Microsoft or give suggestion in the feedback portal. Many features of current products are designed and upgraded based on customers’ feedback. With requirements like this increase, the problem may well be released in the future.
Thank you for your understanding