Rubbing alcohol has been consistently missing.
A lot of other stuff has been coming and going. Liverwurst was missing one time, back the next time I was there. Flours seem to be chronically short, though not missing entirely. Baking soda was unavailable last week; so were the large jugs of white vinegar. Canned pink salmon has been missing for several weeks. Sometimes I’m not sure whether something’s an ordinary momentarily-low shelf or whether it’s the next You Won’t See This Again For A While.