P: Keep shape of radial filter when copying between portrait and landscape images

While editing hundreds of wedding photos though the years I use to add a sphere shaped "radial filter" adding a higher exposure to the couples faces (I think it looks better than vignetting).

If I add a centered sphere in a landscape photo and then batch the same settings onto the next 50 photos all editing will be copied but the sphere will become and ellipse in att the portrait photos.. 

The customer service gave me this answer:

What you are encountering is the normal working feature in the Lightroom since again as I mentioned both the image you are taking for comparison are different proportions where one is horizontal and other is vertical and radial filter circle that is created on the horizontal image is based on the size and position on the horizontal image. So if your positional for circular radial filter is at the center of the image in horizontal image when you copy and paste this setting to horizontal image this position settings is also copied to vertical image and since the Lightroom settings on the original image is applied within the confines of that image that settings is also copied to vertical image. But since the vertical image proportions are different what Lightroom does is changes the proportions of the circular radial filter and converts it to a sphere shaped so that it is applied on the vertical image. This is all normal working of the Lightroom.

My reply is that as a photographer I would rather have a "sphere staying a sphere" no matter which way the photo is turned.