Symptoms
Clients running Firefox on an Android 9 and selecting 'Request Desktop Site' may have a falsely detected user agent.
Impact
Client may possibly get the CAPTCHA challenge, or Device ID functionality may not work correctly.
Conditions
-- Proactive Bot Defense or Device ID features are enabled.
-- Client uses Firefox on on mobile device which is running Android 9, and selects 'Request Desktop Site'.
Workaround
There is no workaround at this time.
Fix Information
Mobile Firefox on Android 9 in Desktop Mode now functions correctly.