I've noticed a very minor issue with roulette chips. If you have exactly $1,000,000 on hand, the 1M chip isn't available to select. It only becomes available when you have $1,000,001 or more. The same issue occurs with the 1K chip when you have exactly $1,000.
I have checked the other chips, and they are all available to select when you have the exact amount of money. IE the 100K chip is available when you have exactly $100,000.
I noticed this issue on a PC (Firefox) and my Samsung Phone (Chrome)