If you are a grapheneOS + Amethyst user, you can also avoid the backspace issues with FUTO keyboard. It also works very nicely and has an F-Droid repo:
Discussion
Futo is great and also on nostr:nprofile1qqs83nn04fezvsu89p8xg7axjwye2u67errat3dx2um725fs7qnrqlgzqtdq0
Ooh. Maybe the best FOSS keyboard I've seen. Swipe is perfect. Voice works well. Dang. Thanks.