It looks like that @Killowen0, but if you actually click on those days that should be blocked but are not grey, they show up as blocked in the sidebar pop-up. Try it and see. I know - really annoying not to be able to see it at a glance, but I am hoping it is being fixed. Noticed it about a week ago.
The really worrying thing is that I had a blocked day (greyed out, too, in May) booked by someone who changed their dates and reservation length. Their request overrode my block, and they were able to book it. I did DM on Twitter to ask what was up, and that date alteration was the culprit. Rep offered sympathy and will "pass it on to the team". I did not insist on a cancellation, so do not know whether that would have been possible, but assume so. What I wanted was a way to make it never happen again, but that is not possible from the host side.
Anyway, do try clicking on those dates, and let me know whether you see the same thing I do.
