Why are the margins incorrect? Will it be missing some words?

[bbhxwl]

Why are the margins incorrect? Will it be missing some words?

 html2canvas(pdfRef.value,{
            scale: window.devicePixelRatio,
            useCORS: true,
            scrollX: 0,
            scrollY: 0,
        }).then(canvas=>{
            const link = document.createElement('a');
            link.download = 'snapshot.png';
            link.href = canvas.toDataURL('image/png');
            link.click();
        })