In my local store, some of the most sought after items are missing, and there's a sign there saying, "This item is available through a courtesy clerk" . So, you have to find a clerk and ask. I think that is their way of 'rationing'. It makes sense.
I bake bread regularly. Usually, there is a ton of flour out there, I almost never see anyone buy flour, let along bread flour. yesterday, the only flour I could find, at all, was a torn bag of bread flour. Oh well, I planned to make bread anyway.
as for TP, do not forget that tissues sold in boxes work as well.