Required field errors not suppressed when using "previous" button

Problem/Motivation

There is currently logic to check for required field validation errors and suppresses them. The related regex tests a validation error string for any word followed by " field is required." to determine that the error is for a required field. The "word" is the title of the field.

This works as expected if the title of the field ends in a word. However, if the field title ends in punctuation, a number, or a symbol, it is not matched and therefore not suppressed.

Proposed resolution

Update the regex to allow any characters to preceed the " field is required." text.