Wix Embed: Popup Overlay No Longer Transparent

Hi everyone 👋, I’m using the popup embed script on a Wix site, and I noticed that the overlay behind the popup now appears solid black. Previously, it seemed transparent (with rounded corners and soft shadow). I’ve tried the available Custom CSS options, but they only affect the popup container itself. On Wix, it’s not possible to change PopupProps.theme.backgroundColor for the overlay. Do you know if there were recent changes in how the popup overlay is handled, or a recommended way to keep it transparent? Thanks!