fix y-offset casting (#5556) #1101

Job	Run time
build (64, x86_64, amd64, /usr/bin, ubuntu-latest)	1m 3s
build (64, aarch64, arm64, /usr/bin, ubuntu-24.04-arm)	1m 18s
build (32, i386, i386, /usr/bin, ubuntu-latest)	40s
	3m 1s

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