Hmm okay, I believe you. Thanks for reporting it. I didn't stealth update the game so don't worry about it, I'll try to replicate it so I can investigate the issue.
aaaand now the shops are frozen again, maybe it hates even-numbered levels
edit: still frozen at level 23
edit edit: and now working again after I sold off my loot, maybe the amount of gold effects things somehow?
edit edit edit: frozen again after nothing at all changed, I give up. it's web gremlims or something, idk