Not yet, same with me all the apk's are touchscreen formatted so although they technically work it's impossible to navigate through the app. The best alternative at the moment is just to use the app on a phone or tablet and cast from iPlayer straight to the TV using the chromecast feature.

The only way i can see this happening is for Xiaomi to get off it arse and do it themselves, tweet @ XiaomiUK and ask them to work on it