How do I change the search function back to how it was yesterday?

Thank you for raising this concern here, @emma85.

However, we want to ensure we'll be on the same page. I'd like to know in which specific area in QuickBooks Online (QBO) that search function is located so we can provide the exact way how to fix it.

Feel free to reply to this post for additional info. We'll reply as soon as possible. Keep safe, and have a good day ahead.