Summary: `scrollTo` used there caused the window to scroll to the most left when a user was inspecting an element which horizontal scroll wasn't in the most left position. This diff removes the horizontal constrain and only scroll vertically. Reviewed By: mweststrate Differential Revision: D23284227 fbshipit-source-id: 7c19cac7496927c631572e222cb1d635dd1f8ea4