Auto fill amount on withdraw doesn't work. Also Autofill should auto subtract the fee if it doesn't already.
Here's code.
javascript:$("#wdbBTC").val(fixnr(parseFloat($("#balanceBTC").html())-parseFloat($("#wdbBTC").attr("txfee"))));
Had this same issue. If I hit the back button on the browser once this popped up, the form came back with the correct value filled in.
Not a solution but at least a workaround.........maybe.