Problem:
Currently when the preview for the bottom most result is opened it slides the result to the top. It happens when the preview to be opened may go below the fold. It causes a lot of visual movement on screen and can be disorienting for the user.
See the opening of third result in this video.
https://drive.google.com/file/d/1Z-YPWhikxwFvjvhrfAaUmUjWt0kl0vqj/view
Fix:
Do not slide the result to the top. The only scenario in which the result should be sliding up is if the preview for one of the results above it is open. Otherwise maintain the position of the result. It is okay if the users have to slide up to view the preview. It less likely for the preview to be entirely below the fold.