When two objects overlaping each other one of them cant highlight

Hi,

I have a problem with two objects wich are overlaping each other. On biger object TEAPOT its show line when is mouse cursor goes over. On second object, a CUP is smller but in a same place as TEAPOT when mouse cursor goes over line dont show up.

All is present in short video.

For changing objects I use level variant set. The BP objects setting are present in video.

please help

https://youtu.be/BQk-D6uq9oY