If I put 2000 by 4000 the picture turns out as if it was counted 2000 by 2000, just stretched up to 4000

if I put 2000 by 4000 the picture turns out as if it was counted 2000 by 2000, just stretched up to 4000 on one side, is it possible to put not only square pictures, but also with a different aspect ratio without distortion?

I think this is a bug, we’re looking into it.