Currently, when the Quick Search record limit is reached, the warning may not always be displayed.

In addition, search results may not be returned normally without displaying a warning.

If the customer's search criteria reach the Quick Search limit, for example, the following warning will improve convenience for the user.

> Search results may not be displayed properly when the 10,000 limit is exceeded

Please consider adding functions by all means.

- Reference Docs

Work with Quick Find’s search item limit

https://docs.microsoft.com/en-us/powerapps/developer/data-platform/quick-find-limit