Fun game! I will echo the same sentiment as the other comments about not understanding the wager slider on the right at first, even though I did read the "Tips" section beforehand (so sounds like a me problem). I did notice the wagering gets lower the more you play the endless mode even if you have enough money. That's probably intentional balancing though, but I wasn't sure.
Also guessing this wasn't supposed to happen, but maybe this is just a web export problem. Happened when I rerolled with one card in the shop.
The only other minor bug I found was that it feels inconsistent when the numpad Enter key works/doesn't.
Overall, this was very fun, and I loved the presentation and audio!