Code runs perfectly！

After using this example(SPD2010), I lit up the screen, but encountered the same problem as in the video(https://www.bilibili.com/video/BV1Lj41197Je/?share_source=copy_web&vd_source=22bec63878894fb747aa6bda6a91f2ad), which has incorrect pixels when only refreshing the arc.Other shapes were normal. i...