I have just had another problem: I opened my Halifax banking app on my iPhone XS and tried to make a payment to someone. When the text edit field came along to enter the amount, the FlickType keyboard (App Store version with subscription) came up. I started typing numbers but the first tap (as so often) did not register so when I realised I’d typed £00 instead of £100, I tried swiping left to delete but the cursor just jumped back up the page. So tgen I tried changing the keyboard to the iOS by swiping up, but I simply could not get the gesture to work. I never had this problem with my iPhone 7 Plus. I had to quit the app, reply to an email, where I could change out of FlickType and tgen go back into the banking app where I did not have this time to grapple with the FlickType keyboard. Somehow, it is not working well on iPhone XS for me!
Harry