On the published page in v2.0 articles, when the reader scrolls down the entire top section of the KB scrolls away. They loose the support links, language selectors, theme selector, and search tool. They also lose the TAGS list, which is now at the top of the "In this article" TOC.
It would be much more useful to the reader if the entire top navigation bar stayed in place when they scrolled. (Not for mobile, where screen space is at a premium, but definitely for desktop viewing; which is how most people use help KBs for software products.)
At the very least, please prevent the hiding of the TAGS list in the right side TOC. It makes no sense to keep the entire TOC visible but hide the TAGS. See attached image for details.