1. Bottom Action Bar covers up the content when Zoom to fit is used to view all the content.
2. Yes, fill up the page and press zoom to fit or Shift+1, and some of the content is behind the Bottom action bar is not visible as the action bar is hovering above it. The fix would be to fit the content to the above area of the action bar instead of the whole canvas.
5. MacOS 11.3.1, Figma97.7 Desktop App