Is there a trick to this or is it just hopelessly broken? I join the waitlist and it pops open saying a seat is available. Click "take the seat" and it opens a table but the empty seat says "reserved" and I can't sit. Click "unjoin" and sometimes it opens the seat and lets me sit, other times someone else gets the reservation. Then to make matters worse the thing pops again telling me there's an open seat at the now full table. It's been like this pretty much forever.

I have had some funny problems with Party's set ups too. Hmm...Maybe just glitchy at the time.