Unexpected blank line after rasterizing sf object

Question

After rasterizing the sf object and plotting it, I see unexpected blank lines both horizontally and vertically.

tmp_r <- fasterize(tmp_buf, afr_r, field = "rwi", fun = "first") |> 
    terra::rast()

tmp_buf originally looks like this: tmp_buf

Image after rasterizing: tmp_r

I tried almost every rasterizing method, all resulting in the same unexpected blank lines.