Photo info window doesn't stay visible.

I am trying to copy down the metadata of a few photos but whenever I click on another app the info window disappears.

For example, I select a photo. Click the "I" for the info window to open. I move to the Safari window or Notes with the photo still open and the info pop-up vanishes. It reappears when I put the curser back on the photo.

Why won't it stay visible? One source said it was by design and not a bug but it seems pretty unintuitive to have it designed that way.

It does this whether the photo is in a desktop folder or if it's in the Photos app.

Is there a way to keep it open/visible? ps -- it's not hidden behind another window/app it just goes invisible.