Search field doesn't complete on TAB

Writing into the "Filter by ..." search field in https://webstatus.dev/ doesn't work like I'd expect when hitting TAB. Steps to reproduce:

1. Focus the text field
2. Type "a" so that the `available_on:chrome` option is highlighted
3. Press TAB. This moves focus away from the text field

The search feels a bit like tab completion because options to complete are shown, with the text already written highlighted, but TAB doesn't work.

This is just my expectation, and perhaps it's a bit old school. Taking a look at what behavior is most common in search fields on popular websites might help decide what's going to be least surprising to users.