Thanks for the kind words and feedback, we've not seen this issue before, but might be some kind of race condition we're not experiencing locally. If it's consistent it would be interesting to see your network and console log
console log: Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://cdn.sidaroth.no/openjam2020/flowerBG.jpg. (Reason: CORS request did not succeed).
I'm guessing you're hosting the assets remotely and itch.io doesn't allow for cross origin request?