[Vuejs]-Bootstrap Vue Sidebar Scroll back to where the toggle button is after close the sidebar

<b-sidebar> returns focus to the element which opened it, which is causing your page to scroll to it.

There’s currently no built-in way to disable this behavior. However in the next version (2.17.0), there will be a new prop no-enforce-focus, which can be used to disable the sidebars built-in focus functionality.