On Firefox desktop, mobile view is shown
Since today, when viewing windy.com on my laptop with Firefox (Ubuntu 21.10), the mobile version of the page is being shown. The mobile version doesn't work on desktop since it requires touch interactions which the mouse seems not to trigger. This is despite deleting all cookies and clearing the cache. Same on private window. Same logged out. On Chrome, the desktop version of the page is correctly shown.
Have you recently changed a version-detection string regex perhaps?