Publishing to the staging site only

I have hired a freelancer and invited them via the freelancer/agency seat to my site. And gave them ‘admin’ rights and am having a weird occurrence when they go into publishing to the “staging site.”

With the staging box checked, then “publish to selected domains”

The “production” check box pops back with a check mark 5 seconds after pressing “publish to selected domains.” So both the staging and production sites are published. We are trying to ONLY publish to the staging site to test code but are unable to due to this bug.

We tested this by adding something in the custom code dialog, selected “staging,” and published. Sure enough, both the staging and production sides received the edit.

Has anyone else experienced this and if so, what is a solution?
Link to site: Webflow - Accelevents

Thank you for your time.