Scroll delay upon anchor link click

Hey!

Strange delay on the “Books” page, when i click “hide reviews” which is a button pointing to book-one section at the top of the page, it first plays the animation (hiding the reviews) then waits a bit and only after that it scrolls.

At the same time “show reviews” button working with a same algorithm and performs just fine

See the video https://www.useloom.com/share/b3b93dcf78a54747b030c4e354d3ac84


Here is my site Read-Only: LINK
(how to share your site Read-Only link)