Relatedly, many websites have nowhere to tap that doesn't do anything. If you try to select some text then want to tap away (to clear the copy/select all/etc popup) you can't do so without navigating away from the page or causing something else unwanted to happen.

This gets doubly frustrating when navigational elements don't contain actual anchor links. If you long-tap on mobile to open in a new tab, the browser decides you are selecting text and there is almost no way to dismiss the resulting copy/etc popup without tapping elsewhere on the page - which you cannot do without navigating elsewhere or otherwise causing an unwanted action.