Copy/pasting essential property keyframes does not work for position properties when they are separated (x/y as separate props)

1. Create a comp with one layer and expose the layer’s position as an essential property
2. Put that comp into the main comp and animate the exposed essential position property.
3. Try to copy paste one of those keyframes → works
4. Now create a similar comp but having the position separated (separate x/y coords) and expose these separate x and y coords as essential properties
5. Put that comp in the main comp and again animate the position (now via separate x and y coords).
6. Try to copy/paste one of those keyframes → does not work (nothing happens on paste)

Reproducible also in test project with freshly created comps that just represent the above setup.

Example project attached…

System Info

After Effects: Version 26.0.0 (Build 67)

macOS: 15.7.4 (24G517)