Did the user accidentally keep hitting Alt+H? Or are they part of some experiment? Gmail writes nothing for me unless I click the "help me write" link. I also don't know why it is so hard to record a screenshot of the behavior, you can write it to example@example.com, and the draft email UI can be clipped from where it shows your email address.
> Gmail writes nothing for me unless I click the "help me write" link.
For me it sometimes (I'm not sure why, it isn't even "intelligent" about which emails have options, automatic noreply@ emails sometimes have it) has buttons to pre-fill a reply with a message out of a few choices. It's not unprompted, but I could see someone accidentally clicking it instead of the reply button.
I see obviously AI-powered tab-completion suggestions, and the Alt-H prompt suggestion when first writing an email, but I've never had it actually insert text unprompted.
