Pre-requisite-
1. Go to browser setting:
chrome://settings/content/javascript?search=content
2. Disable the javascript.
Steps to Replicate -
1. Go to the admin site.
2. Go to /admin/structure/views/view/content/edit (or any page with a vertical scroll)
3. Scroll the page , the toolbar menu gets moved downwards.
4. Go to /admin/structure/views
5. Scroll the page , the toolbar menu gets moved downwards.
Current Result -
If you disable javascript and visit the views ui and views page than on scrolling the page , the toolbar menu gets scrolled down , moved on scrolling.
Expected Result-
It should be static.
Refer to the attached video for more clearance.