Describe the issue. What is the expected and unexpected behavior?
Providing a pre-selected value to a Select typeahead will not display the value when the component is rendered. Using version v3.120.5

My guess would be that typeaheadInputValue defaults to empty string
https://github.com/patternfly/patternfly-react/blob/master/packages/patternfly-4/react-core/src/components/Select/Select.tsx#L127

Whilst there is a null check in rendering
https://github.com/patternfly/patternfly-react/blob/master/packages/patternfly-4/react-core/src/components/Select/Select.tsx#L443

Please provide the steps to reproduce. Feel free to link CodeSandbox or another tool.

https://codesandbox.io/embed/young-moon-kc50s?fontsize=14&hidenavigation=1&theme=dark

Is this a bug or enhancement? If this issue is a bug, is this issue blocking you or is there a work-around?
Bug, blocking for release next week.

What is your product and what release version are you targeting?
Internal RH product