I you create a margin order for 5000, when you try to close it, it does not close and the message "You can't create an order for more than 5000 units" gets displayed. This is very big issue since people could lose a lot of money because of this bug and get stuck in a position.
Not sure where you get this, the maximum single order entry is actually 2000 btc. But even then, one can simply place more than one order under 2000 btc each, but more than 2000 combined, to have them open simultaneously.
This is not a "big issue" or a "bug".
Gee, so much whining about almost nothing going on in this thread lately...