When you scroll down the page on a webflow website (anyone) that has a sidebar menu, the menu gets jumpy and looks awful.
Here is an example of one of the free webflow templates .. here
here is a screenshot of the issue on an ipad mini
notice how the bottom of the side bar jumps up as i scrolled down? .. thats when i took the screen shot.. you can see the sidebar jumped up a bit
this happens on 100% of websites i tested (which have sidebars)