Here is a weird behavior I have experienced on the app (Android):
1) Checked in as normal at T-24, boarding pass shown in the app
2) Hours later, the app is still saying "Ready for check-in".
3) Further, I have noticed an additional option to "Check in remaining passengers" - the discrepancy here is I am the only passenger on the PNR. Click through brings up the already checked-in itinerary screen.
Has anyone else experienced this before? Not sure if it is an app bug (have not looked on desktop), or irregular behavior on the ticket itself (I did chance flight prior to check-in, which changed fare bucket class, ticketed cabin, and PlusPoints modification - full disclosure).