Наконец-то я нашел, что после долгого времени работы над libs в методе onMeasure()
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measuredHeight = (int)(measuredHeight/1.5);
setMeasuredDimension(
//We clamp inline because we want to use un-clamped versions on the children
clampSize(measuredWidth, widthMeasureSpec),
clampSize(measuredHeight, heightMeasureSpec));