If startup is slow, this panel closes when the app is ready. On localhost, set Chrome DevTools →
Network to No throttling (3G/Slow 3G can delay the dev JS bundle by many minutes).
Fiizzz is still starting
If this panel stays visible, the JavaScript bundle may still be downloading. In Chrome DevTools →
Network, choose No throttling (3G / Slow 3G on localhost can add many minutes). Extensions
or web protection can also slow startup.