When I don't rotate it and after that I scale it, that frame snaps to pixel by pixel and when I rotate it, it doesn’t snap to pixels, rotation is affected too (Sorry I don't know how to explain this)

When I don't rotate it and after that I scale it, that frame snaps to pixel by pixel and when I rotate it, it doesn’t snap to pixels, rotation is affected too (Sorry I don't know how to explain this)
Please help me asap!!!!
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