Hi @DJ-VJ, welcome to meta 
I moved your topic to feature since that’s basically a per-user feature request more than an issue or general suggestion on the current UX 
How do you think such a setting would work when browsing a long topic such as ☁️ Discourse Air Theme - #280 by av203?
If you’re in the middle of it, scrolling to see the bottom or top of the sidebar would scroll the posts as well, which may be unwanted…