Combobox menu popover appears empty, list items won't show up

[Agile-fox]

🐛 Bug Report

After using combobox with example usage from spectrum docs the menu is empty. List of item component just don't appear at all. But you can still select them with keyboard. Console don't show any errors

🤔 Expected Behavior

Combobox is showing menu items when clicked on arrow key.

😯 Current Behavior

when clicking on combobox the menu popover appears empty when items are set. Work same for controlled and uncontrolled state.

💻 Code Sample

Codesandbox

🌍 Your Environment

Software	Version(s)
react-spectrum	3.26.0
Browser	Firefox
Operating System	Windows

[reidbarber]

Looks like this is due to React Strict Mode. You can fix it by removing React.StrictMode in index.tsx: https://codesandbox.io/s/jolly-framework-8lios9?file=/src/index.tsx

Issues with React Strict Mode are actively being worked on. We have an umbrella issue for those here: #779

[devongovett]

Closing in favor of umbrella.