Autofill populating wrong fields

We still don't know what caused the issue, but for anyone seeing this we ended up making the field readonly so that auto-fill doesn't fill it. We then wrote some JS that on focus, it becomes active and the user can manually fill it in.

<input type="text" name="company" readonly="" onfocus="this.removeAttribute('readonly');">

Found myself in a similar problem, and the autocomplete property is what to be used in this situations

<input type="text" name="fooBar" autocomplete="organization" > 

exhaustive list of autocomplete/autofill tags for html form inputs

The OP's problem may have been solved (or may have come back again in recent updates!) but as of early 2019, you can diagnose some of these problems by setting the show-autofill-type-predictions flag in chrome://flags, restarting Chrome, then looking at the title (tooltip text) for the input in question. It will tell you what information is being used to guess the "type" of field, and what kind of saved data should be used to populate it.

I encountered a similar problem, having a "company" field placed under a "name" field. That company field was auto-filled with a birth year. It came from another form on the same site that was displaying a "birthdate" field group just below the "name" field. So chrome stored its auto-fill values in that order. I ended up with changing my second form field order (sadly it was the best I could do).