Last column numFmt overrides the format of previous colums

[alexgarciaalcuadrado]

I'm using exceljs 4.4.0. So far I haven't had problems with it but now that I'm trying to format my columns i get a weird bug.
I'm writting data like this

const natWorksheet = workbook.worksheets[1];

  let rowIndex = 2; // Start from row 2 (row 1 is title)
  forecast.map((brand) => {
    const Acell = natWorksheet.getCell(`A${rowIndex}`);
    Acell.value = brand.name;
    const Kcell = natWorksheet.getCell(`K${rowIndex}`);
    Kcell.value = Number(brand.forecastBudget.salesGrowth);
    const Lcell = natWorksheet.getCell(`L${rowIndex}`);
    Lcell.value = Number(brand.forecastBudget.revenue);
    const Mcell = natWorksheet.getCell(`M${rowIndex}`);
    Mcell.value = Number(brand.forecastBudget.revenueGrowth);

    rowIndex++;

    brand.brandFamilies.map((brandFamily: any) => {
      const Acell = natWorksheet.getCell(`A${rowIndex}`);
      Acell.value = brandFamily.name;
      Acell.style.alignment = { indent: 2 };
      const Kcell = natWorksheet.getCell(`K${rowIndex}`);
      Kcell.value = Number(brandFamily.forecastBudget.salesGrowth);
      const Lcell = natWorksheet.getCell(`L${rowIndex}`);
      Lcell.value = Number(brandFamily.forecastBudget.revenue);
      const Mcell = natWorksheet.getCell(`M${rowIndex}`);
      Mcell.value = Number(brandFamily.forecastBudget.revenueGrowth);

      rowIndex++;
    });
  });

and at the end i want to format K and M as percentages and L as currency

  const natKcolumn = natWorksheet.getColumn('K');
  natKcolumn.numFmt = '0%';
  const natLcolumn = natWorksheet.getColumn('L');
  natLcolumn.numFmt = '"$"#,##0.00';
  const natMcolumn = natWorksheet.getColumn('M');
  natMcolumn.numFmt = '0%';

But in the xlsx file K, L and M appear as percentages. If i change the order and leave L at the end then all columns appear as currency.
How can i fix it? Same happened when i tried to set the numFmt on each cells.

[chriscappy16]

I'm having this problem as well. Seems like a bug somewhere?