Pretty sure you're missing something, I've bet a hundred times on the bookies, never had such a problem.
Anyways, this specific bug and the thread has been marked fixed, do not expect admin reply here, if you really think it's a bug you can report it by creating a new thread. However before you do that, you can check how much money you withdrew from your logs. If you look at the top right part of the page, you will see a notepad icon besides your profile image, you can access the logs from there and scroll down to see how much money you withdrew from the bookie.