GF 2.9.0.4 Submit button not working [RESOLVED]

The submit button is not working on my forms with Gravity Form 2.9.0.4 and fails to log partial entries. Form can be filled in with conditional logic working, but nothing happens when clicking the submit button. Returned to working normally after rolling back to a 2.8 release from backups.

Anyone else having this problem?

Gravity Forms

Version: 2.9.0 :heavy_check_mark:
Chained Selects: by Gravity Forms - 1.7 :heavy_check_mark:
Mailchimp: by Gravity Forms - 5.5.0 :heavy_check_mark:
Partial Entries: by Gravity Forms - 1.7 :heavy_check_mark:
Polls: by Gravity Forms - 4.3.0 :heavy_check_mark:
Quiz: by Gravity Forms - 4.2.0 :heavy_check_mark:
Signature: by Gravity Forms - 4.6.0 :heavy_check_mark:
Square: by Gravity Forms - 2.3.0 :heavy_check_mark:
Survey: by Gravity Forms - 4.1.0 :heavy_check_mark:

I have replied to your support ticket regarding this issue. For anyone else encountering this topic, the form contained a few HTML fields with an unbalanced number of opening and closing <div> tags, which made the HTML invalid. While browsers attempt to correct invalid HTML, they often do so unsuccessfully, leading to elements being rendered outside their intended containers. In this case, the submit button was located outside the form tag, disconnecting it from the form.

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