Chrome: Autocomplete not working on particular input fields

Solution 1:

As far as my understanding goes, Firefox will save information for any form input field that has a "name" attribute which the information can be associated to, and chrome/safari/opera only saves specific valuable information such as addresses and payment information.

Solution 2:

Try comparing the HTML of the problematic field to others in the same form. What are the similarities? What are the differences?

Without knowing more details though, a more general approach is to force the field to be categorized by Chrome's Autofill engine. Some fields are not labelled correctly, so Autofill can have trouble with these. As a possible solution, you can allow Chrome to add a unique identifying signature to every form field on the page.

To enable this experimental feature, visit the following URL in a new tab, and then set the flag to Enabled:

chrome://flags/#enable-show-autofill-signatures

You may also have success with related flags -- visit chrome://flags and search for Autofill to try some others.