It allows for more interactive forms, but also frequently makes cause/effect confusing. e.g. things like autofill or tabbing or sometimes just typing quickly ca

It allows for more interactive forms, but also frequently makes cause/effect confusing. e.g. things like autofill or tabbing or sometimes just typing quickly can cause forms to break because they think you have not filled out a field, and it's doing something stupid to make it so you can't fill out the next field, so you end up having to delete and retype text to get it to pick it up.