It seems to disappear if I set: textField.autocorrectionType = UITextAutocorrectionType.no I tried that because of the UIKBautofillController pointing to the field in the memory debugger.

I cannot offer any help, but I have the same issue. I noticed that it appears when I switch the view while the cursor is still in the text field. I tried adding resignFirstResponder in different ways, it did not help.