I agree and sent my own feedback, where before I had one button to click "Mark all as read" but now it's three clicks and hidden, I actually didn't know it was

I agree and sent my own feedback, where before I had one button to click "Mark all as read" but now it's three clicks and hidden, I actually didn't know it was possible until just now when I tried it out again. Also what does "done" even mean? If I'm mentioned in an issue but it's not closed should I mark it done?