Summary: Currently, we have an issue in YogaKit where it ignores the preexisting bounds a root view. There are multiple fixes for this, but the easiest one for developer experience is to apply the preexisting bounds of the root view to it's frame after layout calculation. Reviewed By: emilsjolander Differential Revision: D4537173 fbshipit-source-id: ccef8b1c1398ea299b4e5710abe597378347a48d