This keyboard shortcut only applies within the Classic Flashcards for now. See list of shortcuts here: List of keyboard shortcuts in Readlang. I’ll consider adding it to the new practice modes too, perhaps as Ctrl+D and with an ability to undo in case you hit it accidentally.
That option in the settings applies to the Classic Flashcards only. If you want no typing with the new practice session, you want to select “Blitz” mode.
Good idea! The thing you’re remembering is an experiment I ran briefly which interspersed mini practice sessions throughout the texts you read. These included a match challenge as you’re describing plus a comprehension challenge. They were generated by AI and I killed it partly because the multiple choice comprehension challenge was often of low quality. Bringing back the match challenge either as a new more, or just as an additional challenge type within the current practice sessions, could be a good idea. However one thing I like about the new practice session is the integration of the edit/explain mode to help ensure that you are learning the correct thing, and I’d need to give thought to how the UI for that should work when there are multiple words within the same challenge.