Overlay thumbnail with file type icon in Details + Thumbnails mode

Hello, I was wondering if there was a way to display the file type icon on a file's thumbnail when using Details + Thumbnails mode? The relevant options in the Preferences menu for both Details mode and Thumbnails mode don't seem to affect Details + Thumbnails mode. Am I missing a setting somewhere or is this not possible in the current version of Opus?

Turn off Preferences / File Display Modes / Details / Hide icons when thumbnail column is visible and the normal icon will not be hidden when the thumbnail column is turned on.

This does cause the file type icon to appear beside the filename, but is there a way to have the icon overlaid onto the file's thumbnail the way it is in Thumbnails mode?

No; it'd usually completely cover the thumbnail if it did that.