no, this issue persists regardless of which part of the post you’re trying to quote.
This issue appears when you open a given topic for the first time in the current tab. After you refresh the page or go to the home page and reenter the topic, the quote button is present. But if you open the website in a new tab and re-enter the same topic, for the first time, the “quote” is missing. Again, refreshing or home/re-entering helps.