Interesting, I am a Super Duolingo subscriber but I don't think that's one of the features. Anywhere I'm inputting a sentence I think I get the keyboard option, maybe I'm misremembering, but I do a lot of typing on my Japanese keyboard when I study.
They were clearly doing some A/B testing a while back based on sporadic complaints on r/duolingo. At some point I noticed it had solidified. The current setup is if the drill is target language to host language, you'll always get word bank. If it's host language to target language it'll push you towards word bank but you have a subtle thing to click on that brings back the keyboard. Sometimes it's called "make harder" or sometimes "use keyboard" (vs "make easier" and "use word bank")