1. Disable/disconnect network interfaces.
2. Ensure Chrome knows it's offline by trying to visit sites and seeing an "offline" page.
3. Submit feedback via Alt+Shift+I.

Expected: A message box says "Thank you for your feedback. You are offline now, and your report will be sent later."

Actual: Chrome thinks the report succeeded. No message box appears. A new tab is opened pointing to the "thank you" Help page, and the tab is entirely blank instead of showing an offline message.

Note: I don't think this affects the actual *sending* of the report, i.e. the report probably still gets sent once connectivity is restored.