Thank you both dhamijad and DarkStar_
You're both correct in the fact that this was a rounding issue, and a short-term fix has been applied, we will be making a more strategic fix in our next release which goes live next week.
As per our policy, we have also added a bounty to DarkStar_'s account on BitcoinRush.io He can choose to cash this out immediately with no restrictions, or use it in the Sportsbook or Casino.
I don't know if this is similar to the rounding error alluded to a little while ago, but I withdrew my remaining balance recently (for 0.02055 BTC), which was approved:
https://imgur.com/a/wB78u
However, what was actually sent to my withdrawal address (and therefore the amount I actually received) was less than that:
https://imgur.com/a/IyIL7
What happened? My current balance in BCR is 0. Not sure if this was intentional or a glitch - didn't see anywhere in the ToS or elsewhere that transaction fees were being passed on to users. My last deposit was less than three months ago as well, so it's my understanding that I don't have any withdrawal limits/restrictions on my account.
Please advise. Thanks!