iPadOS 14 introduces a new input method where you can use a stylus to do handwriting recognition in any text input. This works in VisualEditor, but with issues.
The main issue is that the first input stroke seems to be eaten by VE and not used for the handwriting recognition. E.g. if I write "To do", the first stroke of the T isn't used for input. This seems to happen more if the caret is at the start of a paragraph.
A secondary issue is that the undo stack behaves strangely. If I handwrite and then use the system keyboard controls to add newlines and then undo, it seems to squash the newlines and handwriting-recognition together. I'd theorize this is the IME-undo not being canceled and so we're undoing in VE at the same time it's undoing.
iPadOS 14 isn't released yet, so this may or may not need to be acted upon.