I've just attempted it now, and the issue persists.
I'm curious to understand why their game continues to run despite this reported bug.
After all this I wanted to know would be the same problem for me, so I tried.
My result:
bet 1cent on silver, silver won -> closed the tab -> opened a new tab with bc site -> went to casino and chose coin flip game -> session was still active and was able to cash out the previous bet
I am playing on brave browser by the way, maybe it's different for other browsers.
So for me this problem does not exist.
You might be special. Can you record a video and share the results?
Sorry but I appreciate my privacy. When I say the problem didn't occur to me then that's a fact.
Some other user previously commenting also didn't encounter this problem actually.
I just tried again with the way the previous poster recorded: making the bet -> when it wins click on something else like the bonus page or whatever -> return to coin flip -> no cash out button
When I did it the sound route I also had the same result as him.
So in other words, when you refresh the page (close the tab) this doesn't happen, when you stay on the page and just jump somewhere else and then return to the game, the bug is on.