thanks for your reply. yes, this is exactly the issue I am seeing. When data is added to the shoebox on the fastboot server, it gets stored under a key which contains the full url and such the internal domain. When the app is rendered inside the browser, storefront is unable to retrieve data from the shoebox as it is unaware of the internal url which was used in fastboot mode.
I was able to set different hosts using an env var, so I think it’s just the storefront issue and everything should be fine 