When you have a decent amount of orders/order lines in the database (we have around 50,000), it take several seconds for the Orders and Order lines grids to load when you first enter the page after selecting Orders from the menu.
While the data is loading, the screen displays the text "No results found. Please check your filters."
Eventually, the data is displayed in the grid.
If you then, adjust the filter criteria, it reloads the data and displays "Loading...".
Can you make it say "Loading..." to begin with and only say "No results" if indeed there are no results?