The flush or display sync primitive is driven by morphic so it bundles a set if morphic draw commands. I think the box you get when you resize a window frame doesn't do the sync You could nil out the prim call and observe the behavior on a mac or iOS
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On Jan 31, 2014, at 12:05 PM, gettimothy gettimothy@zoho.com wrote:
curious what triggers that "need be"