I was in a non-HC ascension and had a lot of meat in Hagnk's, but the purchases tab listed "Meat in storage: 0", so I was unable to use it to buy items (buying via the relay browser worked). I suspect it's because I had over 2 billion (specifically, over 2^31) meat. After I finished the run, I converted most of my meat to dense meat stacks before ascending, and that fixed the issue.