Don't use DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT A swap chain for Windows.UI.Composition is created with DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT flag, but is resized without it. This leads to an error, because according to MSDN, this flag cannot be changed by a call to ResizeBuffers. In fact, this flag is never used by any code in ANGLE, so we should remove it. https://issues.angleproject.org/442600654