Chrome’s share dialog decides what you can record. Some surfaces never appear, or the picture stays black. That is usually the browser or OS policy, not a missing button in the extension.
What to try
- Switch source: tab instead of screen, or window instead of tab.
- Reload the page and start again so the picker refreshes.
- Check that another app is not already capturing the same display.
- On multi-monitor setups, select the display that actually shows the UI.
- Avoid restricted URLs such as
chrome://pages when you expected a normal site.
Still stuck?
Note the OS, Chrome version, and source you picked, then send feedback via features.extsite.tech with ext=screenrecordervideowebcam. For a first successful take, follow Get started.