Android copy/paste menu covers quote reply button, preventing users from quoting text in replies. This issue is not exclusive to Android, as codinghorror has also reported the same problem on iOS.
codinghorror suggests a solution by adjusting the device detection to include isAndroid in addition to isMobileDevice and isIOS.
A possible fix has been implemented by tgxworld, but it may not be suitable for larger Android tablets. tgxworld will confirm if the fix works for Android devices.
To improve device detection, DeanMarkTaylor shared Google Chrome user agent detection recommendations for distinguishing between Android phones and tablets.
Kind of – depends if we classify Android as “mobile” or not, which might be a problem for the few rare larger Android tablets.. not a problem at the moment since we almost completely lump all Android devices into mobile, but may not be that way in the future, which would make the OP a bug again.