I observed the same behaviour.
Restarting the game doesn't show the patch window but the upgrade windows keeps crashing.
Deleted the old save and it keeps crashing
V 2.2.22 on Windows 10.
Recent community posts
I tried to buy the game for myself or as a gift and I could not do it. Paypal told me at then that the transaction could not be completed and it shows a payment and a refund.
I bought a different game also on Itch.io and I could do it without a problem.
Curiously, the screens leading to Paypal were slightly different.
A shame. I'll keep an eye on Steam.