Accept & Do Not Send a Response

Julia Foran this is how I always assumed it worked and have never checked. Why would it operate any differently? This should not be a question to the community but implemented as it is a design flaw. This post was raised 18 months ago and still nothing has changed, even though it has received a lot of attention??? Currently there has been 47.1k people to view the post, so if that doesn't tell you that people had to google it to find out why the "Accept but Do Not Send a Response" did not work as expected, then nothing will.

Furthermore, if I don't click either accept option then the invite stays in your calendar anyway as tentative, unless you decline or delete the event.