Hi there. When updating to 8.1.0 and 8.1.1 the exp date and CVV are not visible any more. They are visible if displayed in separate sections. Rolling back to 8.0.1 has solved the problem.
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Just to confirm, both expiration date and CVC fields appear as expected on my end, with either classic Checkout (screenshot linked here, for reference) or block-based (screenshot linked here, for reference). Tests performed with the latest version of the Storefront theme (linked here), and WooCommerce.
Moreover, just to note, starting with version 8.1.0 the updated checkout experience is enabled by default for Stripe. Below, I am attaching a screenshot of the settings at my test site, for reference.
I hope this is helpful! Please let us know if you have any further questions about this matter, or if we misinterpret your concern in any way. We will be happy to help you further.