I don't have an ETA for when the issue will be fixed but I'll post an update here as soon as I have any relevant information. We have a system that limits withdrawal amounts if the funds are needed to back orders or margin positions (and other things). The bug is in this system since it is incorrectly withholding a portion of funds in some cases even if you don't have orders or margin positions. In most cases it only withholds small amounts and you can probably withdraw all or almost all of your funds by doing two withdrawals.