It really seems like it. I can’t even find any PZ for flights in next couple days so it appears PZ is just zero in general. Even on routes that almost always have space. Like I see no dates with PZ >0 for ord-bru, or lots of ORD-leisure routes like CUN at off peak times that would essentially always have upgrade space historically.
If it really is all PZ 0 including close in, I imagine this is a bug. I assume even within 24 hrs that waitlist gpu still clears from that bucket? Or how do they clear gate upgrades?