Overlay & Form display pop-up issue

I recently updated and now notice when I click on my overlay to call links to my pop-up forms, the form actually loads behind the overlay.
See screenshot link - https://prnt.sc/73eQDTDNyG5d
The demo site is - https://dev.imapal.ca/. To replicate issue - click on "Contact" at top of page, then "General Inquiries".

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