I forgot to turn off auto-update on my new phone (iPhone XS on iOS 12.1) and so Memrise updated to v2.3.57 yesterday on its own.
While the new UI does look nicer, unfortunately it also broke the existing functionality for keying in text answers: The native keyboard blocks the input box, so I cannot see what I have typed.
If you switch to the in-app keyboard, you can see the textbox is there, though the space button has been cut off.
I have the Button Shapes setting turned on under Accessibility, which is why the letters are underlined.
Reinstalling the app does nothing. This basically renders the app useless to me since I don’t use the in-app keyboard - it gives too much of a hint for my liking.
I reported this through the Google form so I hope the Memrise Team fixes it soon, but I am sharing this as a warning for those who prefer to use the native keyboard.
P.S. I also had to get home and use my laptop to type this up, because trying to login to the Community from any mobile browser simply opens the Memrise app and does nothing else.