I generated some words that contain the letter ‘f’ in the PDF generated using PDFMake, for example, “Waffle” or “Leflaive”, but I am unable to search using any substrings that contain “fl”.

var fonts = {
    Roboto: {
        normal: 'fonts/Roboto-Regular.ttf',
        bold: 'fonts/Roboto-Medium.ttf',
        italics: 'fonts/Roboto-Italic.ttf',
        bolditalics: 'fonts/Roboto-MediumItalic.ttf'
    }
};

// Define the document definition
var docDefinition = {
    content: [
        { text: 'Waffle', font: 'Roboto' },
        { text: 'Lefaive', font: 'Roboto' }
    ],
    defaultStyle: {
        font: 'Roboto'
    }
};

// Create the PDF
pdfMake.createPdf(docDefinition).download('document.pdf');

I tried to use custom fonts but still ended up with the same issue. I love PDFMake and do not want to stop using this library because of this bug.

Please give me a hint. Thank you.