More sprite property change after 7077c99 #20

Job	Run time
clickable (Debug, amd64, glew)	17m 7s
clickable (Debug, amd64, sdl)	16m 37s
clickable (Debug, armhf, glew)	16m 11s
clickable (Debug, armhf, sdl)	14m 45s
clickable (Release, amd64, glew)	15m 54s
clickable (Release, amd64, sdl)	15m 56s
clickable (Release, arm64, glew)	19m 57s
clickable (Release, arm64, sdl)	20m 14s
clickable (Release, armhf, glew)	17m 52s
clickable (Release, armhf, sdl)	16m 29s
	2h 51m 2s

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