AMI "Open in Modal Overlay" creates new tab on MacOS

All of our AMI’s have the “Open in Model Overlay” box checked, but none of the open in a modal. They all open in a new tab.

This is on MacOS Chrome and Safari.

We used to use modal AMI’s all the time when I worked at a Linux shop. I haven’t seen it documented anywhere, but is this a known issue on MacOS?