Inventory IDs Not Loading from List in SO Screen

Hi All 

I’m having in issue with inventory IDs being loaded from the SO entry screen.

When I type in the beginning of and ID, a list would open and start to list the IDs that exist within the system. However, there are only a few items being listed and the rest show as blanks. But when I click one of the blanks, it’ll populate an item on the line.

Is there a way to ensure that all items are loaded on the list? See screenshot below for details:

Thanks

Amit