A desktop-only bug feels peculiar. What browser are you using?
Can you try each of these and re-run the “ask” -
- safe mode at /safe-mode, with themes and theme components disabled
- full-page Ask AI versus the search dropdown. If only the dropdown fails, that narrows it to the search UI
- if you’re familiar, try opening the browser console and see if there are any errors
- if there are no errors, consider opening the Network tab and look for a /message-bus/…/poll result and its “Preview” tab. There should be proper streamed results there
- are your desktop and mobile on the same Wi-Fi? use the same account and query