You can add some css that will block the background until the information box is closed.
This will require adding a class to the pop-up and then using something similar to below:
.modal-dialog:before {
content: "";
opacity: 1;
filter: alpha(opacity=100);
background-color: rgba(8, 17, 56, 0.9);
position: fixed;
top: 0;
bottom: 0;
left: 0;
right: 0;
width: 100%;
height: 100%;
}
An other thing you can do is if you are using the Atlas UI-Resources from the appstore:
https://appstore.home.mendix.com/link/app/104730/Mendix/Atlas-UI-Resources
the pop-up layout that is used in there is a modal pop-up. That means that when the pop-up is open the background can't be clicked
Kind regards,
Edo