Just in case anyone else encounters it, FKG did some really weird stuff last night.

I pulled a 10+1 (I like sarcandra, wanted xmas flavor, no dice). Afterwards, the units page was all weird:
* Either of the "sort by rarity" resulted in a completely blank view. No girls. The other sorts seemed functional at least.
* I had a whole bunch of a 2star I had never seen before, named "buckbean". 11 of them, to be precise.
* Clicking the "sell all" button never gave me anything, despite that I had all those unlocked 2stars, as well as some 3stars and some manyus. I could still sell stuff by clicking them manually, though.

Figured they messed something up, so I closed it for the night. Today, I come back and it's still like that. Manually sold all the buckbean but one (I like collecting), and nothing changed. Figured "what the heck", sold the last buckbean as well... and poof, everything starts working again.

No clue who buckbean is, but apparently FKG was very unhappy with her...