CPSplitView indents its subviews by frame.origin

When placing a CPSplitView in a window, all subviews added to it gets indented by the value of the SplitView's origin.x, and the first subview gets indented by origin.y.

Here's the code that sets up the splitView. topView and bottomView are CPTextField instances. Attached is a screenshot of what happens.

var splitView = [[CPSplitView alloc] initWithFrame:CGRectMake(250,0, CPRectGetWidth([contentView frame]) - 250, CPRectGetHeight([contentView frame]))];

[splitView setAutoresizingMask:CPViewHeightSizable | CPViewWidthSizable];

[splitView setVertical:NO];

[splitView addSubview:topView];
[splitView addSubview:bottomView];