Many users have reported this issue that when they are using new experience while sending a new document to any of the signers. So when they select a field and they choose the prefilled text option to fill in the prefilled text for that text box. While typing the content in the prefill text, it takes time to reflect that prefilled text onto the main screen field. First of all, the users is not a problem, but there are people who are typing ad letters in a minute, and for them it is a problem. Please look into this and get this fixed into the next release.