This issue is specific for the application and it's blocking issue for the customer. 

Test Studio is unable to select an option from an HTML Autocomplete text field. With a regular 'Click' step(SimulateRealClick = True), it clicks on the item from the autocomplete list, but it fails to select it and the validation for this field fails.

When using a coded step to press 'Down' and then the 'Enter' key, Test Studio selects the option, but the field validation still fails.

To reproduce:
Sample test and a Fiddler trace are attached to the internal description.