We use MSD forms on our site. Recently, we noticed that leads were getting created and the Country (which is a required field) is not getting passed to the lead. We think that somehow people are able to submit the form without choosing the country, but we can't confirm. We've added a log to detect browser version, OS, and source of the URL for the form submission. We have tried testing to replicate the issue, but haven't been able to.
How could this possibly happen if the Country field is required?