Popup - parent element not found

When trying to get the data from a popup, I get 'parent element not found.

I can replicate the issue on websummit for example, see the example sitemap:

Url: Meet the startups that joined us at Web Summit 2022


When trying to create a selector under clicker, it does not work and is not clear to me why.

The issue seems to exist when the parent is in a different part than the opening popup, looks like there's no way around this.