Submit button conditional vis no longer working?

For months I’ve had forms using a select No/Yes for a first item (Did you receive X in the mail?), and then visibility Show for the rest of the form content and the Submit button. About a week or so ago, the Submit button started refusing to work and now will appear regardless of Show/Hide visibility conditionals. I’ve tried reinstalling the plugin, rebooting server, downgrading from 5.7.2 to 5.7.1, and using different first field conditions (null=>show, null->hide, checkbox=no->hide, checkbox=yes->show, etc), and I can’t get it to ever hide the submit button.

This issue appears on multiple different sites/servers I use this for, on old and new forms, and on servers both updated and slightly lagging in updates. Rebooting or clearing cache doesn’t help. Some using NGINX/Redis and others just normal WP cache. Ubuntu 20.04 on all servers. Basically, I’m out of ideas what is going wrong here, because it was fine for months.

Thoughts?

Mockup form example linked https://dlbconsulting.dantonbryans.com/elementor-511/

The page I need help with: [log in to see the link]