@RameshB5378 Hi, Can you please let me know if you've found a way to resolve this? We're on 8.6.1 and facing the same issue exactly.
The Data page has 57 records but in auto complete when user clicks down arrow key, only first 40 records are loaded while on Clipboard we do have 57. No limit mentioned in the "Max Results Displayed" field.
Please let me know if you've resolved it.