Simulator proceeds with knockdown animation if character is hit on the last falling frame
The following new combo works in-game for Zeku:
https://sfvsim.com/#Z25*-2.500010GUARDNONE%5B%5B%22SYUKUMYO_G%22%2C~%2C~%2C~%5D%2C%5B%22HOZANTO_M%22%2C0%2C139%2C~%5D%2C%5B%22SYUKUMYO_Y%22%2C~%2C~%2C~%5D%2C%5B%22GRAM3_L%22%2C~%2C~%2C~%5D%5D!Z24000000HITNONE*%5B%5B%22STAND%22%2C~%2C~%2C~%5D%5D!BOTH
The hit registers here as well, but the animation of the opponent still seems to go into knockdown state. If the opponent is set to quickrise, he will actually stay on the ground and start the quickrise animation.