Is the amount checked in bugged?
 

I have noticed recently that flights don't have many people checked in yet its still full. Look at UA1 on 4/23/2024 (It has 19/21 booked in Premium plus and 0 checked in) or (47/48 booked in polaris and only 1 person checked in)

The booked / check-in data in flight status has been been, at times, inaccurate for years especially for flights with a PremPlus cabin.

Definitely broken. UA863 (SFO-SYD, departing in 20 minutes) is showing 0 checked in too.

Folks that are flying today/tomorrow, have you seen the first class “checked in” list at zero?

+1 for broken - 6117 IADCLE (a 175) is showing 1/12 checked in and 12/12 booked... I know I'm not the only person checked in up front.

On 6117 CLEIAD Monday another fun glitch -- both the UG list and SB list showed (different) people cleared in to 11B (a Y E+ seat). Now I know the original 11B wound up flying in 2C because I sat next to him (and the GAs cleared him into F just at door close because of a no-show) but I've never seen the list break in that particular way before... That was the only name showing as cleared on the F list.

Edited: after I posted that it dropped to 11/12 still with 1 checked in. Agent processes the upgrade for #1 on the list... Printed the BP and back to 12/12, but still showing 1/12

I've taken several flights this week, and all of them showed 0 checked in at departure.

I flew to Europe last month and both my outgoing and return flights had empty Polaris seats, which surprised me. Should have counted, but it seemed to be quite a few. The outgoing flew into Brussels, so I didn't think too much about it. The return was from Frankfurt, so that was surprising. I travel out of the US about 3 times a year now and this seems to be a recent thing. In the past few years (prior to 2024), all the Polaris seats seem to have been packed on my flights. Maybe they are being stingy with the upgrades, but that is just an assumption. I have no evidence of that.