In the admin panel, go to Product -> Catalog. Here you get all product listings. There is a search box next to notification icon. This search is not working. Filters are working but why is the search not working ? Please see below image.
Its working in default Magento 2.1.7 With sample data.
I have try same as you mentioned in above but its working fine.
Issue related to you might be You have customized Product grid. Please check any console log generated or not also you can check ajax request for this search process happened in console.
may be broken the ajax request for search request.
I dont see your attached image but its working fine with Magento 2.1.7
If you have any query please let me know.
if issue solved, Click Kudos/Accept as solutions.
This is still an issue.
When you start typing a a search phrase, you get a dropdown appear with suggestions. If I click on "Search 'phrase' in products" - it doesn't perform a search.
It acts as though a search as been performed, but the results suggest otherwise, you just end up with all your products being returned.